78231300 has 72 divisors (see below), whose sum is σ = 258691776. Its totient is φ = 17880960.

The previous prime is 78231287. The next prime is 78231323. The reversal of 78231300 is 313287.

It is a super-2 number, since 2×78231300² = 12240272599380000, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 16527 + ... + 20726.

Almost surely, 2^78231300 is an apocalyptic number.

78231300 is a gapful number since it is divisible by the number (70) formed by its first and last digit.

It is an amenable number.

78231300 is an abundant number, since it is smaller than the sum of its proper divisors (180460476).

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

78231300 is a wasteful number, since it uses less digits than its factorization.

78231300 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 37277 (or 37270 counting only the distinct ones).

The product of its (nonzero) digits is 1008, while the sum is 24.

The square root of 78231300 is about 8844.8459568271. The cubic root of 78231300 is about 427.6877872708.

Adding to 78231300 its reverse (313287), we get a palindrome (78544587).

The spelling of 78231300 in words is "seventy-eight million, two hundred thirty-one thousand, three hundred".