7920115 has 12 divisors (see below), whose sum is σ = 11056176. Its totient is φ = 5430768.

The previous prime is 7920091. The next prime is 7920139. The reversal of 7920115 is 5110297.

It is an interprime number because it is at equal distance from previous prime (7920091) and next prime (7920139).

It is not a de Polignac number, because 7920115 - 2²¹ = 5822963 is a prime.

It is a super-2 number, since 2×7920115² = 125456443226450, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 7920115.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 15919 + ... + 16408.

It is an arithmetic number, because the mean of its divisors is an integer number (921348).

Almost surely, 2^7920115 is an apocalyptic number.

7920115 is a deficient number, since it is larger than the sum of its proper divisors (3136061).

7920115 is a wasteful number, since it uses less digits than its factorization.

7920115 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 32346 (or 32339 counting only the distinct ones).

The product of its (nonzero) digits is 630, while the sum is 25.

The square root of 7920115 is about 2814.2698875552. The cubic root of 7920115 is about 199.3320634538.

The spelling of 7920115 in words is "seven million, nine hundred twenty thousand, one hundred fifteen".