38225728 has 28 divisors (see below), whose sum is σ = 78305152. Its totient is φ = 18495360.

The previous prime is 38225713. The next prime is 38225729. The reversal of 38225728 is 82752283.

It is a super-2 number, since 2×38225728² = 2922412562259968, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (38225729) 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, 7650 + ... + 11617.

Almost surely, 2^38225728 is an apocalyptic number.

It is an amenable number.

38225728 is an abundant number, since it is smaller than the sum of its proper divisors (40079424).

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

38225728 is a wasteful number, since it uses less digits than its factorization.

38225728 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19310 (or 19300 counting only the distinct ones).

The product of its digits is 53760, while the sum is 37.

The square root of 38225728 is about 6182.6958521344. The cubic root of 38225728 is about 336.8619216138.

The spelling of 38225728 in words is "thirty-eight million, two hundred twenty-five thousand, seven hundred twenty-eight".