38458140 has 144 divisors (see below), whose sum is σ = 127475712. Its totient is φ = 8636544.

The previous prime is 38458129. The next prime is 38458153. The reversal of 38458140 is 4185483.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 302757 + ... + 302883.

It is an arithmetic number, because the mean of its divisors is an integer number (885248).

Almost surely, 2^38458140 is an apocalyptic number.

38458140 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 38458140, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (63737856).

38458140 is an abundant number, since it is smaller than the sum of its proper divisors (89017572).

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

38458140 is a wasteful number, since it uses less digits than its factorization.

38458140 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 256 (or 247 counting only the distinct ones).

The product of its (nonzero) digits is 15360, while the sum is 33.

The square root of 38458140 is about 6201.4627306789. The cubic root of 38458140 is about 337.5432482301.

The spelling of 38458140 in words is "thirty-eight million, four hundred fifty-eight thousand, one hundred forty".