38428572 has 72 divisors (see below), whose sum is σ = 111006336. Its totient is φ = 10131264.

The previous prime is 38428543. The next prime is 38428573. The reversal of 38428572 is 27582483.

It is a Harshad number since it is a multiple of its sum of digits (39).

It is a self number, because there is not a number n which added to its sum of digits gives 38428572.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (38428573) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 12843 + ... + 15549.

Almost surely, 2^38428572 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 38428572, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (55503168).

38428572 is an abundant number, since it is smaller than the sum of its proper divisors (72577764).

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

38428572 is a wasteful number, since it uses less digits than its factorization.

38428572 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2747 (or 2732 counting only the distinct ones).

The product of its digits is 107520, while the sum is 39.

The square root of 38428572 is about 6199.0783185890. The cubic root of 38428572 is about 337.4567209250.

The spelling of 38428572 in words is "thirty-eight million, four hundred twenty-eight thousand, five hundred seventy-two".