78732734 has 8 divisors (see below), whose sum is σ = 118163448. Its totient is φ = 39344920.

The previous prime is 78732733. The next prime is 78732737. The reversal of 78732734 is 43723787.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a super-2 number, since 2×78732734² = 12397686806229512, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 78732691 and 78732700.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (78732733) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5657 + ... + 13764.

It is an arithmetic number, because the mean of its divisors is an integer number (14770431).

Almost surely, 2^78732734 is an apocalyptic number.

78732734 is a deficient number, since it is larger than the sum of its proper divisors (39430714).

78732734 is a wasteful number, since it uses less digits than its factorization.

78732734 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21450.

The product of its digits is 197568, while the sum is 41.

The square root of 78732734 is about 8873.1467924294. The cubic root of 78732734 is about 428.5996159344.

The spelling of 78732734 in words is "seventy-eight million, seven hundred thirty-two thousand, seven hundred thirty-four".