20799426 has 16 divisors (see below), whose sum is σ = 42384384. Its totient is φ = 6802224.

The previous prime is 20799407. The next prime is 20799431. The reversal of 20799426 is 62499702.

It is a super-2 number, since 2×20799426² = 865232243858952, which contains 22 as substring.

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, 32386 + ... + 33021.

It is an arithmetic number, because the mean of its divisors is an integer number (2649024).

Almost surely, 2^20799426 is an apocalyptic number.

20799426 is an abundant number, since it is smaller than the sum of its proper divisors (21584958).

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

20799426 is a wasteful number, since it uses less digits than its factorization.

20799426 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 65465.

The product of its (nonzero) digits is 54432, while the sum is 39.

The square root of 20799426 is about 4560.6387710495. The cubic root of 20799426 is about 275.0112436174.

The spelling of 20799426 in words is "twenty million, seven hundred ninety-nine thousand, four hundred twenty-six".