72446152 has 8 divisors (see below), whose sum is σ = 135836550. Its totient is φ = 36223072.

The previous prime is 72446137. The next prime is 72446173. The reversal of 72446152 is 25164427.

It can be written as a sum of positive squares in only one way, i.e., 72148036 + 298116 = 8494^2 + 546^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4527877 + ... + 4527892.

Almost surely, 2^72446152 is an apocalyptic number.

It is an amenable number.

72446152 is a deficient number, since it is larger than the sum of its proper divisors (63390398).

72446152 is a wasteful number, since it uses less digits than its factorization.

72446152 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9055775 (or 9055771 counting only the distinct ones).

The product of its digits is 13440, while the sum is 31.

The square root of 72446152 is about 8511.5305321664. The cubic root of 72446152 is about 416.8742861466.

It can be divided in two parts, 72 and 446152, that added together give a square (446224 = 668²).

The spelling of 72446152 in words is "seventy-two million, four hundred forty-six thousand, one hundred fifty-two".