78734424 has 32 divisors (see below), whose sum is σ = 197219520. Its totient is φ = 26193696.

The previous prime is 78734413. The next prime is 78734437. The reversal of 78734424 is 42443787.

It is a super-2 number, since 2×78734424² = 12398219045223552, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 10599 + ... + 16425.

It is an arithmetic number, because the mean of its divisors is an integer number (6163110).

Almost surely, 2^78734424 is an apocalyptic number.

It is an amenable number.

78734424 is an abundant number, since it is smaller than the sum of its proper divisors (118485096).

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

78734424 is a wasteful number, since it uses less digits than its factorization.

78734424 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6399 (or 6395 counting only the distinct ones).

The product of its digits is 150528, while the sum is 39.

The square root of 78734424 is about 8873.2420230714. The cubic root of 78734424 is about 428.6026825461.

The spelling of 78734424 in words is "seventy-eight million, seven hundred thirty-four thousand, four hundred twenty-four".