72453772 has 12 divisors (see below), whose sum is σ = 132307056. Its totient is φ = 34651760.

The previous prime is 72453767. The next prime is 72453781. The reversal of 72453772 is 27735427.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 393679 + ... + 393862.

It is an arithmetic number, because the mean of its divisors is an integer number (11025588).

Almost surely, 2^72453772 is an apocalyptic number.

It is an amenable number.

72453772 is a deficient number, since it is larger than the sum of its proper divisors (59853284).

72453772 is a wasteful number, since it uses less digits than its factorization.

72453772 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 787568 (or 787566 counting only the distinct ones).

The product of its digits is 82320, while the sum is 37.

The square root of 72453772 is about 8511.9781484682. The cubic root of 72453772 is about 416.8889014648. Note that the first 3 decimals are identical.

The spelling of 72453772 in words is "seventy-two million, four hundred fifty-three thousand, seven hundred seventy-two".