20995926 has 16 divisors (see below), whose sum is σ = 47990784. Its totient is φ = 5998824.

The previous prime is 20995903. The next prime is 20995939. The reversal of 20995926 is 62959902.

It is a Harshad number since it is a multiple of its sum of digits (42), and also a Moran number because the ratio is a prime number: 499903 = 20995926 / (2 + 0 + 9 + 9 + 5 + 9 + 2 + 6).

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, 249910 + ... + 249993.

It is an arithmetic number, because the mean of its divisors is an integer number (2999424).

Almost surely, 2^20995926 is an apocalyptic number.

20995926 is an abundant number, since it is smaller than the sum of its proper divisors (26994858).

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

20995926 is a wasteful number, since it uses less digits than its factorization.

20995926 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 499915.

The product of its (nonzero) digits is 87480, while the sum is 42.

The square root of 20995926 is about 4582.1311635526. The cubic root of 20995926 is about 275.8745754413.

The spelling of 20995926 in words is "twenty million, nine hundred ninety-five thousand, nine hundred twenty-six".