38618628 has 24 divisors (see below), whose sum is σ = 95411232. Its totient is φ = 12115584.

The previous prime is 38618581. The next prime is 38618641. The reversal of 38618628 is 82681683.

It is a self number, because there is not a number n which added to its sum of digits gives 38618628.

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, 94450 + ... + 94857.

It is an arithmetic number, because the mean of its divisors is an integer number (3975468).

Almost surely, 2^38618628 is an apocalyptic number.

It is an amenable number.

38618628 is an abundant number, since it is smaller than the sum of its proper divisors (56792604).

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

38618628 is a wasteful number, since it uses less digits than its factorization.

38618628 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 189331 (or 189329 counting only the distinct ones).

The product of its digits is 110592, while the sum is 42.

The square root of 38618628 is about 6214.3887873225. The cubic root of 38618628 is about 338.0121256577.

The spelling of 38618628 in words is "thirty-eight million, six hundred eighteen thousand, six hundred twenty-eight".