20038628 has 12 divisors (see below), whose sum is σ = 35591472. Its totient is φ = 9869640.

The previous prime is 20038619. The next prime is 20038637. The reversal of 20038628 is 82683002.

It is an interprime number because it is at equal distance from previous prime (20038619) and next prime (20038637).

It is a super-2 number, since 2×20038628² = 803093224244768, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 20038628.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 37118 + ... + 37653.

It is an arithmetic number, because the mean of its divisors is an integer number (2965956).

Almost surely, 2^20038628 is an apocalyptic number.

It is an amenable number.

20038628 is a deficient number, since it is larger than the sum of its proper divisors (15552844).

20038628 is a wasteful number, since it uses less digits than its factorization.

20038628 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 74842 (or 74840 counting only the distinct ones).

The product of its (nonzero) digits is 4608, while the sum is 29.

The square root of 20038628 is about 4476.4526133982. The cubic root of 20038628 is about 271.6164034795.

The spelling of 20038628 in words is "twenty million, thirty-eight thousand, six hundred twenty-eight".