20873415 has 8 divisors (see below), whose sum is σ = 33397488. Its totient is φ = 11132480.

The previous prime is 20873393. The next prime is 20873423. The reversal of 20873415 is 51437802.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 20873415 - 2⁸ = 20873159 is a prime.

It is a congruent 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, 695766 + ... + 695795.

It is an arithmetic number, because the mean of its divisors is an integer number (4174686).

Almost surely, 2^20873415 is an apocalyptic number.

20873415 is a deficient number, since it is larger than the sum of its proper divisors (12524073).

20873415 is a wasteful number, since it uses less digits than its factorization.

20873415 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1391569.

The product of its (nonzero) digits is 6720, while the sum is 30.

The square root of 20873415 is about 4568.7432626489. The cubic root of 20873415 is about 275.3369533587.

The spelling of 20873415 in words is "twenty million, eight hundred seventy-three thousand, four hundred fifteen".