4138290 has 96 divisors (see below), whose sum is σ = 12108096. Its totient is φ = 1010880.

The previous prime is 4138289. The next prime is 4138291. The reversal of 4138290 is 928314.

It is an interprime number because it is at equal distance from previous prime (4138289) and next prime (4138291).

It is a Harshad number since it is a multiple of its sum of digits (27).

It is not an unprimeable number, because it can be changed into a prime (4138291) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 31525 + ... + 31655.

It is an arithmetic number, because the mean of its divisors is an integer number (126126).

Almost surely, 2^4138290 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 4138290, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (6054048).

4138290 is an abundant number, since it is smaller than the sum of its proper divisors (7969806).

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

4138290 is a wasteful number, since it uses less digits than its factorization.

4138290 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 166 (or 154 counting only the distinct ones).

The product of its (nonzero) digits is 1728, while the sum is 27.

The square root of 4138290 is about 2034.2787419624. The cubic root of 4138290 is about 160.5487667341.

The spelling of 4138290 in words is "four million, one hundred thirty-eight thousand, two hundred ninety".