20945526 has 32 divisors (see below), whose sum is σ = 48211200. Its totient is φ = 5942496.

The previous prime is 20945521. The next prime is 20945537. The reversal of 20945526 is 62554902.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20945521) 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, 4585 + ... + 7931.

It is an arithmetic number, because the mean of its divisors is an integer number (1506600).

Almost surely, 2^20945526 is an apocalyptic number.

20945526 is an abundant number, since it is smaller than the sum of its proper divisors (27265674).

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

20945526 is a wasteful number, since it uses less digits than its factorization.

20945526 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3508.

The product of its (nonzero) digits is 21600, while the sum is 33.

The square root of 20945526 is about 4576.6282348471. The cubic root of 20945526 is about 275.6536560927.

The spelling of 20945526 in words is "twenty million, nine hundred forty-five thousand, five hundred twenty-six".