20472626 has 8 divisors (see below), whose sum is σ = 31025820. Its totient is φ = 10130688.

The previous prime is 20472623. The next prime is 20472629. The reversal of 20472626 is 62627402.

It is an interprime number because it is at equal distance from previous prime (20472623) and next prime (20472629).

It can be written as a sum of positive squares in 2 ways, for example, as 18498601 + 1974025 = 4301^2 + 1405^2 .

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 (20472623) by changing a digit.

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 in 3 ways as a sum of consecutive naturals, for example, 52571 + ... + 52958.

Almost surely, 2^20472626 is an apocalyptic number.

20472626 is a deficient number, since it is larger than the sum of its proper divisors (10553194).

20472626 is a wasteful number, since it uses less digits than its factorization.

20472626 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 105628.

The product of its (nonzero) digits is 8064, while the sum is 29.

The square root of 20472626 is about 4524.6686066496. The cubic root of 20472626 is about 273.5633106446.

The spelling of 20472626 in words is "twenty million, four hundred seventy-two thousand, six hundred twenty-six".