7874920 has 16 divisors (see below), whose sum is σ = 17718660. Its totient is φ = 3149952.

The previous prime is 7874887. The next prime is 7874929. The reversal of 7874920 is 294787.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 7851204 + 23716 = 2802^2 + 154^2 .

It is an Ulam number.

It is a self number, because there is not a number n which added to its sum of digits gives 7874920.

It is not an unprimeable number, because it can be changed into a prime (7874929) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 98397 + ... + 98476.

Almost surely, 2^7874920 is an apocalyptic number.

It is an amenable number.

7874920 is an abundant number, since it is smaller than the sum of its proper divisors (9843740).

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

7874920 is a wasteful number, since it uses less digits than its factorization.

7874920 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 196884 (or 196880 counting only the distinct ones).

The product of its (nonzero) digits is 28224, while the sum is 37.

The square root of 7874920 is about 2806.2287861114. The cubic root of 7874920 is about 198.9521866897.

The spelling of 7874920 in words is "seven million, eight hundred seventy-four thousand, nine hundred twenty".