1137220 has 24 divisors (see below), whose sum is σ = 2729664. Its totient is φ = 389856.

The previous prime is 1137209. The next prime is 1137229. The reversal of 1137220 is 227311.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 1137194 and 1137203.

It is not an unprimeable number, because it can be changed into a prime (1137229) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3922 + ... + 4201.

It is an arithmetic number, because the mean of its divisors is an integer number (113736).

2^1137220 is an apocalyptic number.

1137220 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1137220 is an abundant number, since it is smaller than the sum of its proper divisors (1592444).

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

1137220 is a wasteful number, since it uses less digits than its factorization.

1137220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8139 (or 8137 counting only the distinct ones).

The product of its (nonzero) digits is 84, while the sum is 16.

The square root of 1137220 is about 1066.4051762815. The cubic root of 1137220 is about 104.3794080632.

Subtracting from 1137220 its reverse (227311), we obtain a palindrome (909909).

The spelling of 1137220 in words is "one million, one hundred thirty-seven thousand, two hundred twenty".