78334732 has 18 divisors (see below), whose sum is σ = 159467532. Its totient is φ = 33571944.

The previous prime is 78334709. The next prime is 78334733. The reversal of 78334732 is 23743387.

It is a super-2 number, since 2×78334732² = 12272660475023648, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 78334691 and 78334700.

It is not an unprimeable number, because it can be changed into a prime (78334733) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 199638 + ... + 200029.

Almost surely, 2^78334732 is an apocalyptic number.

It is an amenable number.

78334732 is an abundant number, since it is smaller than the sum of its proper divisors (81132800).

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

78334732 is a wasteful number, since it uses less digits than its factorization.

78334732 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 399685 (or 399676 counting only the distinct ones).

The product of its digits is 84672, while the sum is 37.

The square root of 78334732 is about 8850.6910464664. The cubic root of 78334732 is about 427.8761906421.

The spelling of 78334732 in words is "seventy-eight million, three hundred thirty-four thousand, seven hundred thirty-two".