1807872 has 80 divisors (see below), whose sum is σ = 5303232. Its totient is φ = 542720.

The previous prime is 1807867. The next prime is 1807891. The reversal of 1807872 is 2787081.

It is a Harshad number since it is a multiple of its sum of digits (33).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 16843 + ... + 16949.

2^1807872 is an apocalyptic number.

1807872 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 1807872, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2651616).

1807872 is an abundant number, since it is smaller than the sum of its proper divisors (3495360).

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

1807872 is a wasteful number, since it uses less digits than its factorization.

1807872 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 139 (or 123 counting only the distinct ones).

The product of its (nonzero) digits is 6272, while the sum is 33.

The square root of 1807872 is about 1344.5713071459. The cubic root of 1807872 is about 121.8211120082.

The spelling of 1807872 in words is "one million, eight hundred seven thousand, eight hundred seventy-two".