78000900 has 36 divisors (see below), whose sum is σ = 225683472. Its totient is φ = 20800160.

The previous prime is 78000877. The next prime is 78000907. The reversal of 78000900 is 900087.

It is not an unprimeable number, because it can be changed into a prime (78000907) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 129702 + ... + 130301.

Almost surely, 2^78000900 is an apocalyptic number.

It is an amenable number.

78000900 is an abundant number, since it is smaller than the sum of its proper divisors (147682572).

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

78000900 is a wasteful number, since it uses less digits than its factorization.

78000900 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 260020 (or 260013 counting only the distinct ones).

The product of its (nonzero) digits is 504, while the sum is 24.

The square root of 78000900 is about 8831.8118186474. The cubic root of 78000900 is about 427.2675114937.

Adding to 78000900 its reverse (900087), we get a palindrome (78900987).

The spelling of 78000900 in words is "seventy-eight million, nine hundred", and thus it is an aban number.