78153132 has 24 divisors (see below), whose sum is σ = 184556736. Its totient is φ = 25736848.

The previous prime is 78153113. The next prime is 78153169. The reversal of 78153132 is 23135187.

It is a super-2 number, since 2×78153132² = 12215824082818848, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 78153132.

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 7 ways as a sum of consecutive naturals, for example, 38238 + ... + 40229.

It is an arithmetic number, because the mean of its divisors is an integer number (7689864).

Almost surely, 2^78153132 is an apocalyptic number.

It is an amenable number.

78153132 is an abundant number, since it is smaller than the sum of its proper divisors (106403604).

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

78153132 is a wasteful number, since it uses less digits than its factorization.

78153132 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 78557 (or 78555 counting only the distinct ones).

The product of its digits is 5040, while the sum is 30.

The square root of 78153132 is about 8840.4260078347. The cubic root of 78153132 is about 427.5452925576.

The spelling of 78153132 in words is "seventy-eight million, one hundred fifty-three thousand, one hundred thirty-two".