158838420 has 96 divisors (see below), whose sum is σ = 494484480. Its totient is φ = 37831680.

The previous prime is 158838413. The next prime is 158838457. The reversal of 158838420 is 24838851.

It is a Harshad number since it is a multiple of its sum of digits (39).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 20896 + ... + 27464.

It is an arithmetic number, because the mean of its divisors is an integer number (5150880).

Almost surely, 2^158838420 is an apocalyptic number.

158838420 is a gapful number since it is divisible by the number (10) 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 158838420, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (247242240).

158838420 is an abundant number, since it is smaller than the sum of its proper divisors (335646060).

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

158838420 is a wasteful number, since it uses less digits than its factorization.

158838420 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6625 (or 6623 counting only the distinct ones).

The product of its (nonzero) digits is 61440, while the sum is 39.

The square root of 158838420 is about 12603.1115205730. Note that the first 3 decimals coincide. The cubic root of 158838420 is about 541.5665756940.

The spelling of 158838420 in words is "one hundred fifty-eight million, eight hundred thirty-eight thousand, four hundred twenty".