20266628 has 24 divisors (see below), whose sum is σ = 36578304. Its totient is φ = 9819200.

The previous prime is 20266613. The next prime is 20266633. The reversal of 20266628 is 82666202.

It is a junction number, because it is equal to n+sod(n) for n = 20266594 and 20266603.

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, 31001 + ... + 31647.

It is an arithmetic number, because the mean of its divisors is an integer number (1524096).

Almost surely, 2^20266628 is an apocalyptic number.

It is an amenable number.

20266628 is a deficient number, since it is larger than the sum of its proper divisors (16311676).

20266628 is a wasteful number, since it uses less digits than its factorization.

20266628 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 883 (or 881 counting only the distinct ones).

The product of its (nonzero) digits is 13824, while the sum is 32.

The square root of 20266628 is about 4501.8471764377. The cubic root of 20266628 is about 272.6426736526.

The spelling of 20266628 in words is "twenty million, two hundred sixty-six thousand, six hundred twenty-eight".