20612474 has 8 divisors (see below), whose sum is σ = 31029588. Its totient is φ = 10269280.

The previous prime is 20612467. The next prime is 20612477. The reversal of 20612474 is 47421602.

It can be written as a sum of positive squares in 2 ways, for example, as 17347225 + 3265249 = 4165^2 + 1807^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is not an unprimeable number, because it can be changed into a prime (20612477) by changing a digit.

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 in 3 ways as a sum of consecutive naturals, for example, 17777 + ... + 18900.

Almost surely, 2^20612474 is an apocalyptic number.

20612474 is a deficient number, since it is larger than the sum of its proper divisors (10417114).

20612474 is a wasteful number, since it uses less digits than its factorization.

20612474 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 36960.

The product of its (nonzero) digits is 2688, while the sum is 26.

The square root of 20612474 is about 4540.0962544862. The cubic root of 20612474 is about 274.1847990562.

The spelling of 20612474 in words is "twenty million, six hundred twelve thousand, four hundred seventy-four".