78257300 has 36 divisors (see below), whose sum is σ = 185258976. Its totient is φ = 28456800.

The previous prime is 78257287. The next prime is 78257323. The reversal of 78257300 is 375287.

It is a super-2 number, since 2×78257300² = 12248410006580000, which contains 22 as substring.

It is a Smith number, since the sum of its digits (32) coincides with the sum of the digits of its prime factors.

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 11 ways as a sum of consecutive naturals, for example, 34472 + ... + 36671.

Almost surely, 2^78257300 is an apocalyptic number.

It is an amenable number.

78257300 is an abundant number, since it is smaller than the sum of its proper divisors (107001676).

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

78257300 is a wasteful number, since it uses less digits than its factorization.

78257300 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 71168 (or 71161 counting only the distinct ones).

The product of its (nonzero) digits is 11760, while the sum is 32.

The square root of 78257300 is about 8846.3156172499. The cubic root of 78257300 is about 427.7351623871.

The spelling of 78257300 in words is "seventy-eight million, two hundred fifty-seven thousand, three hundred".