78018472 has 16 divisors (see below), whose sum is σ = 167182560. Its totient is φ = 33436464.

The previous prime is 78018467. The next prime is 78018487. The reversal of 78018472 is 27481087.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 696538 + ... + 696649.

It is an arithmetic number, because the mean of its divisors is an integer number (10448910).

Almost surely, 2^78018472 is an apocalyptic number.

It is an amenable number.

78018472 is an abundant number, since it is smaller than the sum of its proper divisors (89164088).

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

78018472 is a wasteful number, since it uses less digits than its factorization.

78018472 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1393200 (or 1393196 counting only the distinct ones).

The product of its (nonzero) digits is 25088, while the sum is 37.

The square root of 78018472 is about 8832.8065754889. The cubic root of 78018472 is about 427.2995939483.

The spelling of 78018472 in words is "seventy-eight million, eighteen thousand, four hundred seventy-two".