38890530 has 160 divisors (see below), whose sum is σ = 126149760. Its totient is φ = 8421408.

The previous prime is 38890529. The next prime is 38890547. The reversal of 38890530 is 3509883.

38890530 is a `hidden beast` number, since 38 + 8 + 90 + 530 = 666.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 79 ways as a sum of consecutive naturals, for example, 2046861 + ... + 2046879.

It is an arithmetic number, because the mean of its divisors is an integer number (788436).

Almost surely, 2^38890530 is an apocalyptic number.

38890530 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 38890530, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (63074880).

38890530 is an abundant number, since it is smaller than the sum of its proper divisors (87259230).

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

38890530 is an equidigital number, since it uses as much as digits as its factorization.

38890530 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 83 (or 36 counting only the distinct ones).

The product of its (nonzero) digits is 25920, while the sum is 36.

The square root of 38890530 is about 6236.2272248532. The cubic root of 38890530 is about 338.8035513075.

The spelling of 38890530 in words is "thirty-eight million, eight hundred ninety thousand, five hundred thirty".