13001572 has 6 divisors (see below), whose sum is σ = 22752758. Its totient is φ = 6500784.

The previous prime is 13001557. The next prime is 13001603. The reversal of 13001572 is 27510031.

It can be written as a sum of positive squares in only one way, i.e., 8608356 + 4393216 = 2934^2 + 2096^2 .

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 as a sum of consecutive naturals, namely, 1625193 + ... + 1625200.

Almost surely, 2^13001572 is an apocalyptic number.

It is an amenable number.

13001572 is a deficient number, since it is larger than the sum of its proper divisors (9751186).

13001572 is a wasteful number, since it uses less digits than its factorization.

13001572 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3250397 (or 3250395 counting only the distinct ones).

The product of its (nonzero) digits is 210, while the sum is 19.

The square root of 13001572 is about 3605.7692660513. The cubic root of 13001572 is about 235.1429460776.

The spelling of 13001572 in words is "thirteen million, one thousand, five hundred seventy-two".