20874470 has 48 divisors (see below), whose sum is σ = 41378688. Its totient is φ = 7572480.

The previous prime is 20874463. The next prime is 20874473. The reversal of 20874470 is 7447802.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20874473) 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 23 ways as a sum of consecutive naturals, for example, 89474 + ... + 89706.

It is an arithmetic number, because the mean of its divisors is an integer number (862056).

Almost surely, 2^20874470 is an apocalyptic number.

20874470 is a deficient number, since it is larger than the sum of its proper divisors (20504218).

20874470 is a wasteful number, since it uses less digits than its factorization.

20874470 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 305 (or 288 counting only the distinct ones).

The product of its (nonzero) digits is 12544, while the sum is 32.

The square root of 20874470 is about 4568.8587196367. The cubic root of 20874470 is about 275.3415920437.

The spelling of 20874470 in words is "twenty million, eight hundred seventy-four thousand, four hundred seventy".