38649975 has 72 divisors (see below), whose sum is σ = 80151120. Its totient is φ = 16289280.

The previous prime is 38649943. The next prime is 38649977. The reversal of 38649975 is 57994683.

38649975 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 38649975 - 2⁵ = 38649943 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (38649977) 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 71 ways as a sum of consecutive naturals, for example, 47371 + ... + 48179.

It is an arithmetic number, because the mean of its divisors is an integer number (1113210).

Almost surely, 2^38649975 is an apocalyptic number.

38649975 is a gapful number since it is divisible by the number (35) formed by its first and last digit.

38649975 is an abundant number, since it is smaller than the sum of its proper divisors (41501145).

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

38649975 is a wasteful number, since it uses less digits than its factorization.

38649975 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 849 (or 837 counting only the distinct ones).

The product of its digits is 1632960, while the sum is 51.

The square root of 38649975 is about 6216.9104063031. The cubic root of 38649975 is about 338.1035564955.

The spelling of 38649975 in words is "thirty-eight million, six hundred forty-nine thousand, nine hundred seventy-five".