38228864 has 32 divisors (see below), whose sum is σ = 76969200. Its totient is φ = 18911232.

The previous prime is 38228863. The next prime is 38228867. The reversal of 38228864 is 46882283.

It is a tau number, because it is divible by the number of its divisors (32).

It is a super-2 number, since 2×38228864² = 2922892085460992, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (38228863) 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, 10877 + ... + 13955.

Almost surely, 2^38228864 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 38228864, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (38484600).

38228864 is an abundant number, since it is smaller than the sum of its proper divisors (38740336).

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

38228864 is an equidigital number, since it uses as much as digits as its factorization.

38228864 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3190 (or 3178 counting only the distinct ones).

The product of its digits is 147456, while the sum is 41.

The square root of 38228864 is about 6182.9494579852. The cubic root of 38228864 is about 336.8711332988.

The spelling of 38228864 in words is "thirty-eight million, two hundred twenty-eight thousand, eight hundred sixty-four".