20572498 has 4 divisors (see below), whose sum is σ = 30858750. Its totient is φ = 10286248.

The previous prime is 20572457. The next prime is 20572507. The reversal of 20572498 is 89427502.

20572498 is nontrivially palindromic in base 14.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 19598329 + 974169 = 4427^2 + 987^2 .

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, 5143123 + ... + 5143126.

Almost surely, 2^20572498 is an apocalyptic number.

20572498 is a deficient number, since it is larger than the sum of its proper divisors (10286252).

20572498 is a wasteful number, since it uses less digits than its factorization.

20572498 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10286251.

The product of its (nonzero) digits is 40320, while the sum is 37.

The square root of 20572498 is about 4535.6915679971. The cubic root of 20572498 is about 274.0074322668.

The spelling of 20572498 in words is "twenty million, five hundred seventy-two thousand, four hundred ninety-eight".