72771452 has 48 divisors (see below), whose sum is σ = 142554720. Its totient is φ = 32285952.

The previous prime is 72771431. The next prime is 72771467. The reversal of 72771452 is 25417727.

It is a plaindrome in base 16.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 209543 + ... + 209889.

It is an arithmetic number, because the mean of its divisors is an integer number (2969890).

Almost surely, 2^72771452 is an apocalyptic number.

It is an amenable number.

72771452 is a deficient number, since it is larger than the sum of its proper divisors (69783268).

72771452 is a wasteful number, since it uses less digits than its factorization.

72771452 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 510 (or 508 counting only the distinct ones).

The product of its digits is 27440, while the sum is 35.

The square root of 72771452 is about 8530.6185004371. The cubic root of 72771452 is about 417.4973085990.

The spelling of 72771452 in words is "seventy-two million, seven hundred seventy-one thousand, four hundred fifty-two".