38431228 has 12 divisors (see below), whose sum is σ = 73368792. Its totient is φ = 17468720.

The previous prime is 38431219. The next prime is 38431249. The reversal of 38431228 is 82213483.

It is a self number, because there is not a number n which added to its sum of digits gives 38431228.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 436675 + ... + 436762.

It is an arithmetic number, because the mean of its divisors is an integer number (6114066).

Almost surely, 2^38431228 is an apocalyptic number.

It is an amenable number.

38431228 is a deficient number, since it is larger than the sum of its proper divisors (34937564).

38431228 is a wasteful number, since it uses less digits than its factorization.

38431228 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 873452 (or 873450 counting only the distinct ones).

The product of its digits is 9216, while the sum is 31.

The square root of 38431228 is about 6199.2925402823. The cubic root of 38431228 is about 337.4644952134.

The spelling of 38431228 in words is "thirty-eight million, four hundred thirty-one thousand, two hundred twenty-eight".