1872040 has 32 divisors (see below), whose sum is σ = 4461480. Its totient is φ = 704512.

The previous prime is 1872007. The next prime is 1872043. The reversal of 1872040 is 402781.

It can be written as a sum of positive squares in 4 ways, for example, as 1865956 + 6084 = 1366^2 + 78^2 .

It is not an unprimeable number, because it can be changed into a prime (1872043) 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, 697 + ... + 2056.

2^1872040 is an apocalyptic number.

1872040 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1872040 is an abundant number, since it is smaller than the sum of its proper divisors (2589440).

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

1872040 is a wasteful number, since it uses less digits than its factorization.

1872040 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2781 (or 2777 counting only the distinct ones).

The product of its (nonzero) digits is 448, while the sum is 22.

The square root of 1872040 is about 1368.2251276745. The cubic root of 1872040 is about 123.2456807607.

The spelling of 1872040 in words is "one million, eight hundred seventy-two thousand, forty".