38990180 has 48 divisors (see below), whose sum is σ = 88842096. Its totient is φ = 14315520.

The previous prime is 38990179. The next prime is 38990183. The reversal of 38990180 is 8109983.

38990180 is nontrivially palindromic in base 13.

It can be written as a sum of positive squares in 8 ways, for example, as 252004 + 38738176 = 502^2 + 6224^2 .

It is a super-4 number, since 4×38990180⁴ (a number of 31 digits) contains 4444 as substring.

It is not an unprimeable number, because it can be changed into a prime (38990183) 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, 12542 + ... + 15338.

It is an arithmetic number, because the mean of its divisors is an integer number (1850877).

Almost surely, 2^38990180 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 38990180, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (44421048).

38990180 is an abundant number, since it is smaller than the sum of its proper divisors (49851916).

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

38990180 is a wasteful number, since it uses less digits than its factorization.

38990180 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2864 (or 2862 counting only the distinct ones).

The product of its (nonzero) digits is 15552, while the sum is 38.

The square root of 38990180 is about 6244.2117196649. The cubic root of 38990180 is about 339.0926789238.

The spelling of 38990180 in words is "thirty-eight million, nine hundred ninety thousand, one hundred eighty".