158464240 has 40 divisors (see below), whose sum is σ = 401925168. Its totient is φ = 57623040.

The previous prime is 158464231. The next prime is 158464247. The reversal of 158464240 is 42464851.

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

It is a super-2 number, since 2×158464240² = 50221830717555200, which contains 22 as substring.

It is a Smith number, since the sum of its digits (34) coincides with the sum of the digits of its prime factors.

It is a junction number, because it is equal to n+sod(n) for n = 158464196 and 158464205.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (158464247) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 89157 + ... + 90916.

Almost surely, 2^158464240 is an apocalyptic number.

158464240 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

158464240 is an abundant number, since it is smaller than the sum of its proper divisors (243460928).

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

158464240 is a wasteful number, since it uses less digits than its factorization.

158464240 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 180097 (or 180091 counting only the distinct ones).

The product of its (nonzero) digits is 30720, while the sum is 34.

The square root of 158464240 is about 12588.2580208701. The cubic root of 158464240 is about 541.1409802702.

The spelling of 158464240 in words is "one hundred fifty-eight million, four hundred sixty-four thousand, two hundred forty".