158740440 has 64 divisors (see below), whose sum is σ = 501292800. Its totient is φ = 40102272.

The previous prime is 158740423. The next prime is 158740447. The reversal of 158740440 is 44047851.

158740440 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (158740447) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 32532 + ... + 37091.

It is an arithmetic number, because the mean of its divisors is an integer number (7832700).

Almost surely, 2^158740440 is an apocalyptic number.

158740440 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

158740440 is an abundant number, since it is smaller than the sum of its proper divisors (342552360).

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

158740440 is a wasteful number, since it uses less digits than its factorization.

158740440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 69656 (or 69652 counting only the distinct ones).

The product of its (nonzero) digits is 17920, while the sum is 33.

The square root of 158740440 is about 12599.2237856147. The cubic root of 158740440 is about 541.4551970837.

The spelling of 158740440 in words is "one hundred fifty-eight million, seven hundred forty thousand, four hundred forty".