20682474 has 16 divisors (see below), whose sum is σ = 43163712. Its totient is φ = 6594368.

The previous prime is 20682463. The next prime is 20682499. The reversal of 20682474 is 47428602.

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 74799 + ... + 75074.

It is an arithmetic number, because the mean of its divisors is an integer number (2697732).

Almost surely, 2^20682474 is an apocalyptic number.

20682474 is an abundant number, since it is smaller than the sum of its proper divisors (22481238).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

20682474 is a wasteful number, since it uses less digits than its factorization.

20682474 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 149901.

The product of its (nonzero) digits is 21504, while the sum is 33.

The square root of 20682474 is about 4547.7988082148. The cubic root of 20682474 is about 274.4948257325.

The spelling of 20682474 in words is "twenty million, six hundred eighty-two thousand, four hundred seventy-four".