71878632 has 32 divisors (see below), whose sum is σ = 205368000. Its totient is φ = 20536704.

The previous prime is 71878613. The next prime is 71878661. The reversal of 71878632 is 23687817.

It is a Harshad number since it is a multiple of its sum of digits (42).

It is a nude number because it is divisible by every one of its digits.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 213757 + ... + 214092.

It is an arithmetic number, because the mean of its divisors is an integer number (6417750).

Almost surely, 2^71878632 is an apocalyptic number.

It is an amenable number.

71878632 is an abundant number, since it is smaller than the sum of its proper divisors (133489368).

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

71878632 is a wasteful number, since it uses less digits than its factorization.

71878632 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 427865 (or 427861 counting only the distinct ones).

The product of its digits is 112896, while the sum is 42.

The square root of 71878632 is about 8478.1266798745. The cubic root of 71878632 is about 415.7828779452.

The spelling of 71878632 in words is "seventy-one million, eight hundred seventy-eight thousand, six hundred thirty-two".