72544494 has 64 divisors (see below), whose sum is σ = 165560832. Its totient is φ = 20995200.

The previous prime is 72544487. The next prime is 72544501. The reversal of 72544494 is 49444527.

It is an interprime number because it is at equal distance from previous prime (72544487) and next prime (72544501).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 148719 + ... + 149205.

It is an arithmetic number, because the mean of its divisors is an integer number (2586888).

Almost surely, 2^72544494 is an apocalyptic number.

72544494 is a gapful number since it is divisible by the number (74) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 72544494, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (82780416).

72544494 is an abundant number, since it is smaller than the sum of its proper divisors (93016338).

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

72544494 is a wasteful number, since it uses less digits than its factorization.

72544494 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 601.

The product of its digits is 161280, while the sum is 39.

The square root of 72544494 is about 8517.3055598587. The cubic root of 72544494 is about 417.0628294705.

The spelling of 72544494 in words is "seventy-two million, five hundred forty-four thousand, four hundred ninety-four".