78323936 has 24 divisors (see below), whose sum is σ = 155244600. Its totient is φ = 38896768.

The previous prime is 78323933. The next prime is 78323953. The reversal of 78323936 is 63932387.

It is a super-2 number, since 2×78323936² = 12269277901064192, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 78323893 and 78323902.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (78323933) 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, 3446 + ... + 12981.

It is an arithmetic number, because the mean of its divisors is an integer number (6468525).

Almost surely, 2^78323936 is an apocalyptic number.

It is an amenable number.

78323936 is a deficient number, since it is larger than the sum of its proper divisors (76920664).

78323936 is a wasteful number, since it uses less digits than its factorization.

78323936 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16586 (or 16578 counting only the distinct ones).

The product of its digits is 163296, while the sum is 41.

The square root of 78323936 is about 8850.0811295716. The cubic root of 78323936 is about 427.8565332758.

The spelling of 78323936 in words is "seventy-eight million, three hundred twenty-three thousand, nine hundred thirty-six".