38428220 has 24 divisors (see below), whose sum is σ = 83303808. Its totient is φ = 14875200.

The previous prime is 38428183. The next prime is 38428223. The reversal of 38428220 is 2282483.

38428220 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (38428223) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 30371 + ... + 31610.

It is an arithmetic number, because the mean of its divisors is an integer number (3470992).

Almost surely, 2^38428220 is an apocalyptic number.

It is an amenable number.

38428220 is an abundant number, since it is smaller than the sum of its proper divisors (44875588).

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

38428220 is a wasteful number, since it uses less digits than its factorization.

38428220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 62021 (or 62019 counting only the distinct ones).

The product of its (nonzero) digits is 6144, while the sum is 29.

The square root of 38428220 is about 6199.0499272066. The cubic root of 38428220 is about 337.4556905707.

The spelling of 38428220 in words is "thirty-eight million, four hundred twenty-eight thousand, two hundred twenty".