158193240 has 64 divisors (see below), whose sum is σ = 499564800. Its totient is φ = 39964032.

The previous prime is 158193229. The next prime is 158193257. The reversal of 158193240 is 42391851.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 32412 + ... + 36971.

It is an arithmetic number, because the mean of its divisors is an integer number (7805700).

Almost surely, 2^158193240 is an apocalyptic number.

158193240 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

158193240 is an abundant number, since it is smaller than the sum of its proper divisors (341371560).

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

158193240 is a wasteful number, since it uses less digits than its factorization.

158193240 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 69416 (or 69412 counting only the distinct ones).

The product of its (nonzero) digits is 8640, while the sum is 33.

The square root of 158193240 is about 12577.4894156187. The cubic root of 158193240 is about 540.8323241273.

The spelling of 158193240 in words is "one hundred fifty-eight million, one hundred ninety-three thousand, two hundred forty".