20995626 has 32 divisors (see below), whose sum is σ = 42845760. Its totient is φ = 6857984.

The previous prime is 20995621. The next prime is 20995631. The reversal of 20995626 is 62659902.

It is an interprime number because it is at equal distance from previous prime (20995621) and next prime (20995631).

It is a super-2 number, since 2×20995626² = 881632622263752, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (20995621) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 117205 + ... + 117383.

It is an arithmetic number, because the mean of its divisors is an integer number (1338930).

Almost surely, 2^20995626 is an apocalyptic number.

20995626 is an abundant number, since it is smaller than the sum of its proper divisors (21850134).

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

20995626 is a wasteful number, since it uses less digits than its factorization.

20995626 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 470.

The product of its (nonzero) digits is 58320, while the sum is 39.

The square root of 20995626 is about 4582.0984275766. The cubic root of 20995626 is about 275.8732614916.

The spelling of 20995626 in words is "twenty million, nine hundred ninety-five thousand, six hundred twenty-six".