158004240 has 40 divisors (see below), whose sum is σ = 489813888. Its totient is φ = 42134400.

The previous prime is 158004229. The next prime is 158004311. The reversal of 158004240 is 42400851.

It is a tau number, because it is divible by the number of its divisors (40).

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

It is a nialpdrome in base 15.

It is a self number, because there is not a number n which added to its sum of digits gives 158004240.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 328936 + ... + 329415.

Almost surely, 2^158004240 is an apocalyptic number.

158004240 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

158004240 is an abundant number, since it is smaller than the sum of its proper divisors (331809648).

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

158004240 is a wasteful number, since it uses less digits than its factorization.

158004240 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 658367 (or 658361 counting only the distinct ones).

The product of its (nonzero) digits is 1280, while the sum is 24.

The square root of 158004240 is about 12569.9737469893. The cubic root of 158004240 is about 540.6168533861.

The spelling of 158004240 in words is "one hundred fifty-eight million, four thousand, two hundred forty".