78417016 has 16 divisors (see below), whose sum is σ = 147247200. Its totient is φ = 39151104.

The previous prime is 78417013. The next prime is 78417029. The reversal of 78417016 is 61071487.

It is a super-2 number, since 2×78417016² = 12298456796688512, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (78417013) 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, 1065 + ... + 12568.

It is an arithmetic number, because the mean of its divisors is an integer number (9202950).

Almost surely, 2^78417016 is an apocalyptic number.

It is an amenable number.

78417016 is a deficient number, since it is larger than the sum of its proper divisors (68830184).

78417016 is a wasteful number, since it uses less digits than its factorization.

78417016 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14358 (or 14354 counting only the distinct ones).

The product of its (nonzero) digits is 9408, while the sum is 34.

The square root of 78417016 is about 8855.3382769943. The cubic root of 78417016 is about 428.0259541136.

The spelling of 78417016 in words is "seventy-eight million, four hundred seventeen thousand, sixteen".