38422428 has 48 divisors (see below), whose sum is σ = 100458624. Its totient is φ = 11327040.

The previous prime is 38422421. The next prime is 38422429. The reversal of 38422428 is 82422483.

It is a Harshad number since it is a multiple of its sum of digits (33).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (38422421) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 951 + ... + 8817.

It is an arithmetic number, because the mean of its divisors is an integer number (2092888).

Almost surely, 2^38422428 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 38422428, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (50229312).

38422428 is an abundant number, since it is smaller than the sum of its proper divisors (62036196).

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

38422428 is a wasteful number, since it uses less digits than its factorization.

38422428 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7922 (or 7920 counting only the distinct ones).

The product of its digits is 24576, while the sum is 33.

The square root of 38422428 is about 6198.5827412401. The cubic root of 38422428 is about 337.4387356561.

The spelling of 38422428 in words is "thirty-eight million, four hundred twenty-two thousand, four hundred twenty-eight".