72499427 has 64 divisors (see below), whose sum is σ = 105283584. Its totient is φ = 48090240.

The previous prime is 72499423. The next prime is 72499429.

72499427 is nontrivially palindromic in base 10.

It is not a de Polignac number, because 72499427 - 2² = 72499423 is a prime.

Its product of digits (254016) is a multiple of the sum of its prime divisors (168).

It is not an unprimeable number, because it can be changed into a prime (72499423) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 1082048 + ... + 1082114.

It is an arithmetic number, because the mean of its divisors is an integer number (1645056).

Almost surely, 2^72499427 is an apocalyptic number.

72499427 is a gapful number since it is divisible by the number (77) formed by its first and last digit.

72499427 is a deficient number, since it is larger than the sum of its proper divisors (32784157).

72499427 is a wasteful number, since it uses less digits than its factorization.

72499427 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 168.

The product of its digits is 254016, while the sum is 44.

The square root of 72499427 is about 8514.6595351781. The cubic root of 72499427 is about 416.9764472471.

The spelling of 72499427 in words is "seventy-two million, four hundred ninety-nine thousand, four hundred twenty-seven".