20628488 has 32 divisors (see below), whose sum is σ = 40037760. Its totient is φ = 9958080.

The previous prime is 20628481. The next prime is 20628521. The reversal of 20628488 is 88482602.

It is a super-2 number, since 2×20628488² = 851069034332288, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (20628481) 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, 30878 + ... + 31538.

It is an arithmetic number, because the mean of its divisors is an integer number (1251180).

Almost surely, 2^20628488 is an apocalyptic number.

It is an amenable number.

20628488 is a deficient number, since it is larger than the sum of its proper divisors (19409272).

20628488 is a wasteful number, since it uses less digits than its factorization.

20628488 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 797 (or 793 counting only the distinct ones).

The product of its (nonzero) digits is 49152, while the sum is 38.

The square root of 20628488 is about 4541.8595310731. The cubic root of 20628488 is about 274.2557861484.

The spelling of 20628488 in words is "twenty million, six hundred twenty-eight thousand, four hundred eighty-eight".