78374872 has 16 divisors (see below), whose sum is σ = 148012200. Its totient is φ = 38904960.

The previous prime is 78374861. The next prime is 78374899. The reversal of 78374872 is 27847387.

It is a super-4 number, since 4×78374872⁴ (a number of 33 digits) contains 4444 as substring. Note that it is a super-d number also for d = 2.

It is a congruent number.

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, 34129 + ... + 36352.

Almost surely, 2^78374872 is an apocalyptic number.

It is an amenable number.

78374872 is a deficient number, since it is larger than the sum of its proper divisors (69637328).

78374872 is a wasteful number, since it uses less digits than its factorization.

78374872 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 70626 (or 70622 counting only the distinct ones).

The product of its digits is 526848, while the sum is 46.

The square root of 78374872 is about 8852.9583755940. The cubic root of 78374872 is about 427.9492617526.

The spelling of 78374872 in words is "seventy-eight million, three hundred seventy-four thousand, eight hundred seventy-two".