158261040 has 240 divisors, whose sum is σ = 630459648. Its totient is φ = 36142848.

The previous prime is 158261017. The next prime is 158261071. The reversal of 158261040 is 40162851.

158261040 is a `hidden beast` number, since 1 + 5 + 8 + 2 + 610 + 40 = 666.

It is a tau number, because it is divible by the number of its divisors (240).

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

It is a junction number, because it is equal to n+sod(n) for n = 158260995 and 158261013.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 135499 + ... + 136661.

Almost surely, 2^158261040 is an apocalyptic number.

158261040 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 158261040, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (315229824).

158261040 is an abundant number, since it is smaller than the sum of its proper divisors (472198608).

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

158261040 is a wasteful number, since it uses less digits than its factorization.

158261040 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1198 (or 1180 counting only the distinct ones).

The product of its (nonzero) digits is 1920, while the sum is 27.

The square root of 158261040 is about 12580.1844183621. The cubic root of 158261040 is about 540.9095781538.

The spelling of 158261040 in words is "one hundred fifty-eight million, two hundred sixty-one thousand, forty".