20890662 has 16 divisors (see below), whose sum is σ = 44995440. Its totient is φ = 6427872.

The previous prime is 20890619. The next prime is 20890663. The reversal of 20890662 is 26609802.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20890663) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 133837 + ... + 133992.

It is an arithmetic number, because the mean of its divisors is an integer number (2812215).

Almost surely, 2^20890662 is an apocalyptic number.

20890662 is an abundant number, since it is smaller than the sum of its proper divisors (24104778).

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

20890662 is a wasteful number, since it uses less digits than its factorization.

20890662 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 267847.

The product of its (nonzero) digits is 10368, while the sum is 33.

The square root of 20890662 is about 4570.6303722791. The cubic root of 20890662 is about 275.4127663666.

The spelling of 20890662 in words is "twenty million, eight hundred ninety thousand, six hundred sixty-two".