78459132 has 48 divisors (see below), whose sum is σ = 193813760. Its totient is φ = 24634368.

The previous prime is 78459127. The next prime is 78459137. The reversal of 78459132 is 23195487.

It is an interprime number because it is at equal distance from previous prime (78459127) and next prime (78459137).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (78459137) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 43113 + ... + 44895.

Almost surely, 2^78459132 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 78459132, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (96906880).

78459132 is an abundant number, since it is smaller than the sum of its proper divisors (115354628).

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

78459132 is a wasteful number, since it uses less digits than its factorization.

78459132 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2002 (or 2000 counting only the distinct ones).

The product of its digits is 60480, while the sum is 39.

The square root of 78459132 is about 8857.7159584173. The cubic root of 78459132 is about 428.1025680754.

The spelling of 78459132 in words is "seventy-eight million, four hundred fifty-nine thousand, one hundred thirty-two".