72352052 has 12 divisors (see below), whose sum is σ = 128351076. Its totient is φ = 35680320.

The previous prime is 72352001. The next prime is 72352061. The reversal of 72352052 is 25025327.

It can be written as a sum of positive squares in 2 ways, for example, as 41036836 + 31315216 = 6406^2 + 5596^2 .

It is a super-2 number, since 2×72352052² = 10469638857221408, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 123599 + ... + 124182.

It is an arithmetic number, because the mean of its divisors is an integer number (10695923).

Almost surely, 2^72352052 is an apocalyptic number.

It is an amenable number.

72352052 is a deficient number, since it is larger than the sum of its proper divisors (55999024).

72352052 is a wasteful number, since it uses less digits than its factorization.

72352052 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 247858 (or 247856 counting only the distinct ones).

The product of its (nonzero) digits is 4200, while the sum is 26.

The square root of 72352052 is about 8506.0009405125. Note that the first 3 decimals coincide. The cubic root of 72352052 is about 416.6937158618.

Adding to 72352052 its reverse (25025327), we get a palindrome (97377379).

The spelling of 72352052 in words is "seventy-two million, three hundred fifty-two thousand, fifty-two".