20470974 has 16 divisors (see below), whose sum is σ = 42263040. Its totient is φ = 6603480.

The previous prime is 20470973. The next prime is 20470993. The reversal of 20470974 is 47907402.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20470973) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 54844 + ... + 55215.

It is an arithmetic number, because the mean of its divisors is an integer number (2641440).

Almost surely, 2^20470974 is an apocalyptic number.

20470974 is an abundant number, since it is smaller than the sum of its proper divisors (21792066).

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

20470974 is a wasteful number, since it uses less digits than its factorization.

20470974 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 110095.

The product of its (nonzero) digits is 14112, while the sum is 33.

The square root of 20470974 is about 4524.4860481606. The cubic root of 20470974 is about 273.5559522212. Note that the first 3 decimals are identical.

The spelling of 20470974 in words is "twenty million, four hundred seventy thousand, nine hundred seventy-four".