7927990 has 32 divisors (see below), whose sum is σ = 16755264. Its totient is φ = 2643840.

The previous prime is 7927979. The next prime is 7927999. The reversal of 7927990 is 997297.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (7927999) 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, 1060 + ... + 4120.

It is an arithmetic number, because the mean of its divisors is an integer number (523602).

Almost surely, 2^7927990 is an apocalyptic number.

7927990 is a gapful number since it is divisible by the number (70) formed by its first and last digit.

7927990 is an abundant number, since it is smaller than the sum of its proper divisors (8827274).

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

7927990 is a wasteful number, since it uses less digits than its factorization.

7927990 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3112.

The product of its (nonzero) digits is 71442, while the sum is 43.

The square root of 7927990 is about 2815.6686594839. The cubic root of 7927990 is about 199.3981071085.

The spelling of 7927990 in words is "seven million, nine hundred twenty-seven thousand, nine hundred ninety".