78150315 has 16 divisors (see below), whose sum is σ = 125492256. Its totient is φ = 41529600.

The previous prime is 78150301. The next prime is 78150329. The reversal of 78150315 is 51305187.

It is an interprime number because it is at equal distance from previous prime (78150301) and next prime (78150329).

It is not a de Polignac number, because 78150315 - 2⁹ = 78149803 is a prime.

It is a super-2 number, since 2×78150315² = 12214943469198450, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 5056 + ... + 13485.

It is an arithmetic number, because the mean of its divisors is an integer number (7843266).

Almost surely, 2^78150315 is an apocalyptic number.

78150315 is a deficient number, since it is larger than the sum of its proper divisors (47341941).

78150315 is a wasteful number, since it uses less digits than its factorization.

78150315 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18830.

The product of its (nonzero) digits is 4200, while the sum is 30.

The square root of 78150315 is about 8840.2666814978. The cubic root of 78150315 is about 427.5401555933.

The spelling of 78150315 in words is "seventy-eight million, one hundred fifty thousand, three hundred fifteen".