38442870 has 32 divisors (see below), whose sum is σ = 102515040. Its totient is φ = 10251360.

The previous prime is 38442857. The next prime is 38442881. The reversal of 38442870 is 7824483.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 70921 + ... + 71460.

It is an arithmetic number, because the mean of its divisors is an integer number (3203595).

Almost surely, 2^38442870 is an apocalyptic number.

38442870 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

38442870 is an abundant number, since it is smaller than the sum of its proper divisors (64072170).

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

38442870 is a wasteful number, since it uses less digits than its factorization.

38442870 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 142397 (or 142391 counting only the distinct ones).

The product of its (nonzero) digits is 43008, while the sum is 36.

The square root of 38442870 is about 6200.2314472929. The cubic root of 38442870 is about 337.4985678952.

The spelling of 38442870 in words is "thirty-eight million, four hundred forty-two thousand, eight hundred seventy".