72400268 has 12 divisors (see below), whose sum is σ = 130125072. Its totient is φ = 35221680.

The previous prime is 72400259. The next prime is 72400357. The reversal of 72400268 is 86200427.

It is a self number, because there is not a number n which added to its sum of digits gives 72400268.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 244448 + ... + 244743.

It is an arithmetic number, because the mean of its divisors is an integer number (10843756).

Almost surely, 2^72400268 is an apocalyptic number.

It is an amenable number.

72400268 is a deficient number, since it is larger than the sum of its proper divisors (57724804).

72400268 is a wasteful number, since it uses less digits than its factorization.

72400268 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 489232 (or 489230 counting only the distinct ones).

The product of its (nonzero) digits is 5376, while the sum is 29.

The square root of 72400268 is about 8508.8347028251. The cubic root of 72400268 is about 416.7862580095.

The spelling of 72400268 in words is "seventy-two million, four hundred thousand, two hundred sixty-eight".