38140428 has 24 divisors (see below), whose sum is σ = 89878320. Its totient is φ = 12587200.

The previous prime is 38140387. The next prime is 38140439. The reversal of 38140428 is 82404183.

It is a hoax number, since the sum of its digits (30) coincides with the sum of the digits of its distinct prime factors.

It is a junction number, because it is equal to n+sod(n) for n = 38140395 and 38140404.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 14523 + ... + 16946.

It is an arithmetic number, because the mean of its divisors is an integer number (3744930).

Almost surely, 2^38140428 is an apocalyptic number.

It is an amenable number.

38140428 is an abundant number, since it is smaller than the sum of its proper divisors (51737892).

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

38140428 is a wasteful number, since it uses less digits than its factorization.

38140428 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 31577 (or 31575 counting only the distinct ones).

The product of its (nonzero) digits is 6144, while the sum is 30.

The square root of 38140428 is about 6175.7937141715. The cubic root of 38140428 is about 336.6111679694.

The spelling of 38140428 in words is "thirty-eight million, one hundred forty thousand, four hundred twenty-eight".