78492726 has 120 divisors (see below), whose sum is σ = 197692704. Its totient is φ = 23250240.

The previous prime is 78492719. The next prime is 78492751. The reversal of 78492726 is 62729487.

It is a super-2 number, since 2×78492726² = 12322216069822152, which contains 22 as substring.

Its product of digits (338688) is a multiple of the sum of its prime divisors (126).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 59 ways as a sum of consecutive naturals, for example, 1286736 + ... + 1286796.

Almost surely, 2^78492726 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 78492726, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (98846352).

78492726 is an abundant number, since it is smaller than the sum of its proper divisors (119199978).

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

78492726 is a wasteful number, since it uses less digits than its factorization.

78492726 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 148 (or 126 counting only the distinct ones).

The product of its digits is 338688, while the sum is 45.

The square root of 78492726 is about 8859.6120682567. The cubic root of 78492726 is about 428.1636598616.

It can be divided in two parts, 78 and 492726, that added together give a square (492804 = 702²).

The spelling of 78492726 in words is "seventy-eight million, four hundred ninety-two thousand, seven hundred twenty-six".