20879464 has 16 divisors (see below), whose sum is σ = 39204000. Its totient is φ = 10425072.

The previous prime is 20879459. The next prime is 20879477. The reversal of 20879464 is 46497802.

It is a super-3 number, since 3×20879464³ (a number of 23 digits) contains 333 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6387 + ... + 9085.

It is an arithmetic number, because the mean of its divisors is an integer number (2450250).

Almost surely, 2^20879464 is an apocalyptic number.

It is an amenable number.

20879464 is a deficient number, since it is larger than the sum of its proper divisors (18324536).

20879464 is a wasteful number, since it uses less digits than its factorization.

20879464 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3672 (or 3668 counting only the distinct ones).

The product of its (nonzero) digits is 96768, while the sum is 40.

The square root of 20879464 is about 4569.4052129353. The cubic root of 20879464 is about 275.3635478310.

The spelling of 20879464 in words is "twenty million, eight hundred seventy-nine thousand, four hundred sixty-four".