1303020 has 96 divisors (see below), whose sum is σ = 4300800. Its totient is φ = 326592.

The previous prime is 1303013. The next prime is 1303031. The reversal of 1303020 is 203031.

It is a happy number.

It is a super-2 number, since 2×1303020² = 3395722240800, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (9).

It is a junction number, because it is equal to n+sod(n) for n = 1302993 and 1303011.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 10197 + ... + 10323.

It is an arithmetic number, because the mean of its divisors is an integer number (44800).

2^1303020 is an apocalyptic number.

1303020 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1303020, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2150400).

1303020 is an abundant number, since it is smaller than the sum of its proper divisors (2997780).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1303020 is a wasteful number, since it uses less digits than its factorization.

1303020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 164 (or 156 counting only the distinct ones).

The product of its (nonzero) digits is 18, while the sum is 9.

The square root of 1303020 is about 1141.4990144542. The cubic root of 1303020 is about 109.2237359344.

1303020 divided by its product of nonzero digits (18) gives a triangular number (72390 = T₃₈₀).

Adding to 1303020 its reverse (203031), we get a palindrome (1506051).

The spelling of 1303020 in words is "one million, three hundred three thousand, twenty".