71878460 has 24 divisors (see below), whose sum is σ = 155815296. Its totient is φ = 27823680.

The previous prime is 71878459. The next prime is 71878489. The reversal of 71878460 is 6487817.

It is a congruent number.

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, 57347 + ... + 58586.

It is an arithmetic number, because the mean of its divisors is an integer number (6492304).

Almost surely, 2^71878460 is an apocalyptic number.

It is an amenable number.

71878460 is an abundant number, since it is smaller than the sum of its proper divisors (83936836).

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

71878460 is a wasteful number, since it uses less digits than its factorization.

71878460 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 115973 (or 115971 counting only the distinct ones).

The product of its (nonzero) digits is 75264, while the sum is 41.

The square root of 71878460 is about 8478.1165361181. The cubic root of 71878460 is about 415.7825462995.

The spelling of 71878460 in words is "seventy-one million, eight hundred seventy-eight thousand, four hundred sixty".