72051332 has 12 divisors (see below), whose sum is σ = 126315420. Its totient is φ = 35961216.

The previous prime is 72051323. The next prime is 72051361. The reversal of 72051332 is 23315027.

It can be written as a sum of positive squares in 2 ways, for example, as 22714756 + 49336576 = 4766^2 + 7024^2 .

It is a junction number, because it is equal to n+sod(n) for n = 72051298 and 72051307.

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, 13553 + ... + 18104.

It is an arithmetic number, because the mean of its divisors is an integer number (10526285).

Almost surely, 2^72051332 is an apocalyptic number.

It is an amenable number.

72051332 is a deficient number, since it is larger than the sum of its proper divisors (54264088).

72051332 is a wasteful number, since it uses less digits than its factorization.

72051332 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 32230 (or 32228 counting only the distinct ones).

The product of its (nonzero) digits is 1260, while the sum is 23.

The square root of 72051332 is about 8488.3056024156. The cubic root of 72051332 is about 416.1156067382.

Adding to 72051332 its reverse (23315027), we get a palindrome (95366359).

The spelling of 72051332 in words is "seventy-two million, fifty-one thousand, three hundred thirty-two".