20895020 has 12 divisors (see below), whose sum is σ = 43879584. Its totient is φ = 8358000.

The previous prime is 20895013. The next prime is 20895029. The reversal of 20895020 is 2059802.

It is not an unprimeable number, because it can be changed into a prime (20895029) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 522356 + ... + 522395.

It is an arithmetic number, because the mean of its divisors is an integer number (3656632).

Almost surely, 2^20895020 is an apocalyptic number.

20895020 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20895020 is an abundant number, since it is smaller than the sum of its proper divisors (22984564).

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

20895020 is a wasteful number, since it uses less digits than its factorization.

20895020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1044760 (or 1044758 counting only the distinct ones).

The product of its (nonzero) digits is 1440, while the sum is 26.

The square root of 20895020 is about 4571.1070869101. The cubic root of 20895020 is about 275.4319163163.

The spelling of 20895020 in words is "twenty million, eight hundred ninety-five thousand, twenty".