158492640 has 96 divisors (see below), whose sum is σ = 507530016. Its totient is φ = 41564160.

The previous prime is 158492639. The next prime is 158492647. The reversal of 158492640 is 46294851.

158492640 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a tau number, because it is divible by the number of its divisors (96).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (158492647) 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, 26574 + ... + 31986.

It is an arithmetic number, because the mean of its divisors is an integer number (5286771).

Almost surely, 2^158492640 is an apocalyptic number.

158492640 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 158492640, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (253765008).

158492640 is an abundant number, since it is smaller than the sum of its proper divisors (349037376).

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

158492640 is a wasteful number, since it uses less digits than its factorization.

158492640 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5492 (or 5484 counting only the distinct ones).

The product of its (nonzero) digits is 69120, while the sum is 39.

The square root of 158492640 is about 12589.3860056795. The cubic root of 158492640 is about 541.1733061455.

The spelling of 158492640 in words is "one hundred fifty-eight million, four hundred ninety-two thousand, six hundred forty".