38242920 has 32 divisors (see below), whose sum is σ = 114729120. Its totient is φ = 10198080.

The previous prime is 38242903. The next prime is 38242921. The reversal of 38242920 is 2924283.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is not an unprimeable number, because it can be changed into a prime (38242921) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 159226 + ... + 159465.

It is an arithmetic number, because the mean of its divisors is an integer number (3585285).

Almost surely, 2^38242920 is an apocalyptic number.

38242920 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

It is an amenable number.

38242920 is an abundant number, since it is smaller than the sum of its proper divisors (76486200).

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

38242920 is a wasteful number, since it uses less digits than its factorization.

38242920 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 318705 (or 318701 counting only the distinct ones).

The product of its (nonzero) digits is 6912, while the sum is 30.

The square root of 38242920 is about 6184.0860278622. The cubic root of 38242920 is about 336.9124151990.

The spelling of 38242920 in words is "thirty-eight million, two hundred forty-two thousand, nine hundred twenty".