72389452 has 12 divisors (see below), whose sum is σ = 131050080. Its totient is φ = 34946576.

The previous prime is 72389437. The next prime is 72389453. The reversal of 72389452 is 25498327.

It is a super-3 number, since 3×72389452³ (a number of 25 digits) contains 333 as substring.

It is an alternating number because its digits alternate between odd and even.

It is not an unprimeable number, because it can be changed into a prime (72389453) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 311908 + ... + 312139.

It is an arithmetic number, because the mean of its divisors is an integer number (10920840).

Almost surely, 2^72389452 is an apocalyptic number.

It is an amenable number.

72389452 is a deficient number, since it is larger than the sum of its proper divisors (58660628).

72389452 is a wasteful number, since it uses less digits than its factorization.

72389452 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 624080 (or 624078 counting only the distinct ones).

The product of its digits is 120960, while the sum is 40.

The square root of 72389452 is about 8508.1991043934. The cubic root of 72389452 is about 416.7655021716.

The spelling of 72389452 in words is "seventy-two million, three hundred eighty-nine thousand, four hundred fifty-two".