38861970 has 32 divisors (see below), whose sum is σ = 106593408. Its totient is φ = 8882688.

The previous prime is 38861959. The next prime is 38862007. The reversal of 38861970 is 7916883.

It is a Harshad number since it is a multiple of its sum of digits (42).

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, 92319 + ... + 92738.

It is an arithmetic number, because the mean of its divisors is an integer number (3331044).

Almost surely, 2^38861970 is an apocalyptic number.

38861970 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

38861970 is an abundant number, since it is smaller than the sum of its proper divisors (67731438).

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

38861970 is a wasteful number, since it uses less digits than its factorization.

38861970 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 185074.

The product of its (nonzero) digits is 72576, while the sum is 42.

The square root of 38861970 is about 6233.9369582953. The cubic root of 38861970 is about 338.7205953880.

The spelling of 38861970 in words is "thirty-eight million, eight hundred sixty-one thousand, nine hundred seventy".