78325530 has 32 divisors (see below), whose sum is σ = 194047488. Its totient is φ = 20212800.

The previous prime is 78325529. The next prime is 78325571. The reversal of 78325530 is 3552387.

It is a super-2 number, since 2×78325530² = 12269777299561800, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 78325491 and 78325500.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 41181 + ... + 43040.

It is an arithmetic number, because the mean of its divisors is an integer number (6063984).

Almost surely, 2^78325530 is an apocalyptic number.

78325530 is an abundant number, since it is smaller than the sum of its proper divisors (115721958).

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

78325530 is a wasteful number, since it uses less digits than its factorization.

78325530 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 84262.

The product of its (nonzero) digits is 25200, while the sum is 33.

The square root of 78325530 is about 8850.1711847851. The cubic root of 78325530 is about 427.8594357460.

The spelling of 78325530 in words is "seventy-eight million, three hundred twenty-five thousand, five hundred thirty".