78493492 has 60 divisors (see below), whose sum is σ = 175051296. Its totient is φ = 30540720.

The previous prime is 78493489. The next prime is 78493511. The reversal of 78493492 is 29439487.

It is a happy number.

It is a super-2 number, since 2×78493492² = 12322456572708128, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 105273 + ... + 106015.

Almost surely, 2^78493492 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 78493492, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (87525648).

78493492 is an abundant number, since it is smaller than the sum of its proper divisors (96557804).

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

78493492 is a wasteful number, since it uses less digits than its factorization.

78493492 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 786 (or 763 counting only the distinct ones).

The product of its digits is 435456, while the sum is 46.

The square root of 78493492 is about 8859.6552980350. The cubic root of 78493492 is about 428.1650526543.

The spelling of 78493492 in words is "seventy-eight million, four hundred ninety-three thousand, four hundred ninety-two".