38999628 has 144 divisors (see below), whose sum is σ = 112869120. Its totient is φ = 11290752.

The previous prime is 38999621. The next prime is 38999629. The reversal of 38999628 is 82699983.

38999628 is a `hidden beast` number, since 3 + 8 + 9 + 9 + 9 + 628 = 666.

It is not an unprimeable number, because it can be changed into a prime (38999621) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 582051 + ... + 582117.

Almost surely, 2^38999628 is an apocalyptic number.

38999628 is a gapful number since it is divisible by the number (38) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 38999628, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (56434560).

38999628 is an abundant number, since it is smaller than the sum of its proper divisors (73869492).

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

38999628 is a wasteful number, since it uses less digits than its factorization.

38999628 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 156 (or 151 counting only the distinct ones).

The product of its digits is 1679616, while the sum is 54.

The square root of 38999628 is about 6244.9682144908. The cubic root of 38999628 is about 339.1200660667.

The spelling of 38999628 in words is "thirty-eight million, nine hundred ninety-nine thousand, six hundred twenty-eight".