7978902 has 32 divisors (see below), whose sum is σ = 16576512. Its totient is φ = 2558304.

The previous prime is 7978889. The next prime is 7978903. The reversal of 7978902 is 2098797.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (7978903) 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, 28053 + ... + 28335.

It is an arithmetic number, because the mean of its divisors is an integer number (518016).

Almost surely, 2^7978902 is an apocalyptic number.

7978902 is an abundant number, since it is smaller than the sum of its proper divisors (8597610).

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

7978902 is a wasteful number, since it uses less digits than its factorization.

7978902 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 452.

The product of its (nonzero) digits is 63504, while the sum is 42.

The square root of 7978902 is about 2824.6950277862. The cubic root of 7978902 is about 199.8240285490.

The spelling of 7978902 in words is "seven million, nine hundred seventy-eight thousand, nine hundred two".