38911772 has 12 divisors (see below), whose sum is σ = 71679720. Its totient is φ = 18431856.

The previous prime is 38911771. The next prime is 38911781. The reversal of 38911772 is 27711983.

It is a Harshad number since it is a multiple of its sum of digits (38).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (38911771) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 255923 + ... + 256074.

It is an arithmetic number, because the mean of its divisors is an integer number (5973310).

Almost surely, 2^38911772 is an apocalyptic number.

It is an amenable number.

38911772 is a deficient number, since it is larger than the sum of its proper divisors (32767948).

38911772 is a wasteful number, since it uses less digits than its factorization.

38911772 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 512020 (or 512018 counting only the distinct ones).

The product of its digits is 21168, while the sum is 38.

The square root of 38911772 is about 6237.9301054116. The cubic root of 38911772 is about 338.8652248917.

The spelling of 38911772 in words is "thirty-eight million, nine hundred eleven thousand, seven hundred seventy-two".