158490 has 32 divisors (see below), whose sum is σ = 423360. Its totient is φ = 42192.

The previous prime is 158489. The next prime is 158507. The reversal of 158490 is 94851.

158490 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is an Ulam number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 24 + ... + 563.

It is an arithmetic number, because the mean of its divisors is an integer number (13230).

2¹⁵⁸⁴⁹⁰ is an apocalyptic number.

158490 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 158490, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (211680).

158490 is an abundant number, since it is smaller than the sum of its proper divisors (264870).

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

158490 is a wasteful number, since it uses less digits than its factorization.

158490 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 603 (or 597 counting only the distinct ones).

The product of its (nonzero) digits is 1440, while the sum is 27.

The square root of 158490 is about 398.1080255408. The cubic root of 158490 is about 54.1170301368.

The spelling of 158490 in words is "one hundred fifty-eight thousand, four hundred ninety".