1899072 has 112 divisors (see below), whose sum is σ = 6421120. Its totient is φ = 539136.

The previous prime is 1899059. The next prime is 1899077. The reversal of 1899072 is 2709981.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (112).

It is a super-2 number, since 2×1899072² = 7212948922368, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a nialpdrome in base 12.

It is a zygodrome in base 12.

It is not an unprimeable number, because it can be changed into a prime (1899077) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 12018 + ... + 12174.

2^1899072 is an apocalyptic number.

1899072 is a gapful number since it is divisible by the number (12) 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 1899072, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3210560).

1899072 is an abundant number, since it is smaller than the sum of its proper divisors (4522048).

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

1899072 is a wasteful number, since it uses less digits than its factorization.

1899072 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 185 (or 169 counting only the distinct ones).

The product of its (nonzero) digits is 9072, while the sum is 36.

The square root of 1899072 is about 1378.0682131157. The cubic root of 1899072 is about 123.8360650153.

It can be divided in two parts, 189 and 9072, that added together give a cube (9261 = 21³).

The spelling of 1899072 in words is "one million, eight hundred ninety-nine thousand, seventy-two".