158000640 has 160 divisors (see below), whose sum is σ = 577463040. Its totient is φ = 36102144.

The previous prime is 158000621. The next prime is 158000641. The reversal of 158000640 is 46000851.

It is a tau number, because it is divible by the number of its divisors (160).

It is a Harshad number since it is a multiple of its sum of digits (24).

It is a self number, because there is not a number n which added to its sum of digits gives 158000640.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (158000641) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 52291 + ... + 55229.

It is an arithmetic number, because the mean of its divisors is an integer number (3609144).

Almost surely, 2^158000640 is an apocalyptic number.

158000640 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 158000640, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (288731520).

158000640 is an abundant number, since it is smaller than the sum of its proper divisors (419462400).

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

158000640 is an equidigital number, since it uses as much as digits as its factorization.

158000640 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2972 (or 2956 counting only the distinct ones).

The product of its (nonzero) digits is 960, while the sum is 24.

The square root of 158000640 is about 12569.8305477838. The cubic root of 158000640 is about 540.6127475143.

The spelling of 158000640 in words is "one hundred fifty-eight million, six hundred forty", and thus it is an aban number.