38642970 has 16 divisors (see below), whose sum is σ = 92743200. Its totient is φ = 10304784.

The previous prime is 38642969. The next prime is 38642971. The reversal of 38642970 is 7924683.

It is an interprime number because it is at equal distance from previous prime (38642969) and next prime (38642971).

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (38642971) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 644020 + ... + 644079.

It is an arithmetic number, because the mean of its divisors is an integer number (5796450).

Almost surely, 2^38642970 is an apocalyptic number.

38642970 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

38642970 is an abundant number, since it is smaller than the sum of its proper divisors (54100230).

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

38642970 is a wasteful number, since it uses less digits than its factorization.

38642970 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1288109.

The product of its (nonzero) digits is 72576, while the sum is 39.

The square root of 38642970 is about 6216.3469980367. The cubic root of 38642970 is about 338.0831290695.

The spelling of 38642970 in words is "thirty-eight million, six hundred forty-two thousand, nine hundred seventy".