78234732 has 36 divisors (see below), whose sum is σ = 198075696. Its totient is φ = 26036640.

The previous prime is 78234677. The next prime is 78234763. The reversal of 78234732 is 23743287.

It is a tau number, because it is divible by the number of its divisors (36).

It is a super-2 number, since 2×78234732² = 12241346582223648, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 28233 + ... + 30879.

Almost surely, 2^78234732 is an apocalyptic number.

It is an amenable number.

78234732 is an abundant number, since it is smaller than the sum of its proper divisors (119840964).

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

78234732 is a wasteful number, since it uses less digits than its factorization.

78234732 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3478 (or 3473 counting only the distinct ones).

The product of its digits is 56448, while the sum is 36.

The square root of 78234732 is about 8845.0399659922. The cubic root of 78234732 is about 427.6940413874.

The spelling of 78234732 in words is "seventy-eight million, two hundred thirty-four thousand, seven hundred thirty-two".