72370652 has 24 divisors (see below), whose sum is σ = 129481632. Its totient is φ = 35380800.

The previous prime is 72370651. The next prime is 72370663. The reversal of 72370652 is 25607327.

It is a happy number.

It is a super-2 number, since 2×72370652² = 10475022541810208, which contains 22 as substring.

It is a Smith number, since the sum of its digits (32) coincides with the sum of the digits of its prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (72370651) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 114377 + ... + 115007.

It is an arithmetic number, because the mean of its divisors is an integer number (5395068).

Almost surely, 2^72370652 is an apocalyptic number.

It is an amenable number.

72370652 is a deficient number, since it is larger than the sum of its proper divisors (57110980).

72370652 is a wasteful number, since it uses less digits than its factorization.

72370652 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1229 (or 1227 counting only the distinct ones).

The product of its (nonzero) digits is 17640, while the sum is 32.

The square root of 72370652 is about 8507.0942160058. The cubic root of 72370652 is about 416.7294201661.

Adding to 72370652 its reverse (25607327), we get a palindrome (97977979).

The spelling of 72370652 in words is "seventy-two million, three hundred seventy thousand, six hundred fifty-two".