158794240 has 80 divisors (see below), whose sum is σ = 415419840. Its totient is φ = 57733120.

The previous prime is 158794219. The next prime is 158794241. The reversal of 158794240 is 42497851.

It is a tau number, because it is divible by the number of its divisors (80).

It is a super-2 number, since 2×158794240² = 50431221314355200, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (40).

It is a junction number, because it is equal to n+sod(n) for n = 158794193 and 158794202.

It is not an unprimeable number, because it can be changed into a prime (158794241) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 25341 + ... + 30979.

It is an arithmetic number, because the mean of its divisors is an integer number (5192748).

Almost surely, 2^158794240 is an apocalyptic number.

158794240 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 158794240, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (207709920).

158794240 is an abundant number, since it is smaller than the sum of its proper divisors (256625600).

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

158794240 is an equidigital number, since it uses as much as digits as its factorization.

158794240 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5673 (or 5657 counting only the distinct ones).

The product of its (nonzero) digits is 80640, while the sum is 40.

The square root of 158794240 is about 12601.3586569068. The cubic root of 158794240 is about 541.5163598206.

The spelling of 158794240 in words is "one hundred fifty-eight million, seven hundred ninety-four thousand, two hundred forty".