78415476 has 24 divisors (see below), whose sum is σ = 183652224. Its totient is φ = 26040960.

The previous prime is 78415471. The next prime is 78415483. The reversal of 78415476 is 67451487.

It is a super-2 number, since 2×78415476² = 12297973752613152, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (78415471) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 8805 + ... + 15308.

It is an arithmetic number, because the mean of its divisors is an integer number (7652176).

Almost surely, 2^78415476 is an apocalyptic number.

It is an amenable number.

78415476 is an abundant number, since it is smaller than the sum of its proper divisors (105236748).

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

78415476 is a wasteful number, since it uses less digits than its factorization.

78415476 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 24391 (or 24389 counting only the distinct ones).

The product of its digits is 188160, while the sum is 42.

The square root of 78415476 is about 8855.2513233674. The cubic root of 78415476 is about 428.0231521525.

The spelling of 78415476 in words is "seventy-eight million, four hundred fifteen thousand, four hundred seventy-six".