78497496 has 96 divisors (see below), whose sum is σ = 265075200. Its totient is φ = 20387520.

The previous prime is 78497479. The next prime is 78497509. The reversal of 78497496 is 69479487.

It is a happy number.

It is a nude number because it is divisible by every one of its digits.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1536 + ... + 12623.

It is an arithmetic number, because the mean of its divisors is an integer number (2761200).

Almost surely, 2^78497496 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 78497496, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (132537600).

78497496 is an abundant number, since it is smaller than the sum of its proper divisors (186577704).

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

78497496 is a wasteful number, since it uses less digits than its factorization.

78497496 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14189 (or 14182 counting only the distinct ones).

The product of its digits is 3048192, while the sum is 54.

The square root of 78497496 is about 8859.8812633127. The cubic root of 78497496 is about 428.1723328491.

Subtracting from 78497496 its reverse (69479487), we obtain a square (9018009 = 3003²).

It can be divided in two parts, 7 and 8497496, that added together give a triangular number (8497503 = T₄₁₂₂).

The spelling of 78497496 in words is "seventy-eight million, four hundred ninety-seven thousand, four hundred ninety-six".