4638020928 has 28 divisors (see below), whose sum is σ = 12271430880. Its totient is φ = 1546006912.

The previous prime is 4638020927. The next prime is 4638020951. The reversal of 4638020928 is 8290208364.

It is a super-2 number, since 2×4638020928² = 43022476257131962368, 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 4638020928.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4638020927) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 12077988 + ... + 12078371.

Almost surely, 2^4638020928 is an apocalyptic number.

4638020928 is a gapful number since it is divisible by the number (48) formed by its first and last digit.

It is an amenable number.

4638020928 is an abundant number, since it is smaller than the sum of its proper divisors (7633409952).

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

4638020928 is a wasteful number, since it uses less digits than its factorization.

4638020928 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 24156374 (or 24156364 counting only the distinct ones).

The product of its (nonzero) digits is 165888, while the sum is 42.

The square root of 4638020928 is about 68103.0170256796. The cubic root of 4638020928 is about 1667.6730147070.

The spelling of 4638020928 in words is "four billion, six hundred thirty-eight million, twenty thousand, nine hundred twenty-eight".