72642032 has 10 divisors (see below), whose sum is σ = 140743968. Its totient is φ = 36321008.

The previous prime is 72642029. The next prime is 72642041. The reversal of 72642032 is 23024627.

It is a junction number, because it is equal to n+sod(n) for n = 72641992 and 72642010.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2270048 + ... + 2270079.

Almost surely, 2^72642032 is an apocalyptic number.

It is an amenable number.

72642032 is a deficient number, since it is larger than the sum of its proper divisors (68101936).

72642032 is a wasteful number, since it uses less digits than its factorization.

72642032 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4540135 (or 4540129 counting only the distinct ones).

The product of its (nonzero) digits is 4032, while the sum is 26.

The square root of 72642032 is about 8523.0295083380. The cubic root of 72642032 is about 417.2496631137.

Adding to 72642032 its reverse (23024627), we get a palindrome (95666659).

The spelling of 72642032 in words is "seventy-two million, six hundred forty-two thousand, thirty-two".