158402240 has 56 divisors (see below), whose sum is σ = 397062960. Its totient is φ = 60023808.

The previous prime is 158402227. The next prime is 158402249. The reversal of 158402240 is 42204851.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (158402249) 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, 6947 + ... + 19106.

It is an arithmetic number, because the mean of its divisors is an integer number (7090410).

Almost surely, 2^158402240 is an apocalyptic number.

158402240 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

158402240 is an abundant number, since it is smaller than the sum of its proper divisors (238660720).

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

158402240 is a wasteful number, since it uses less digits than its factorization.

158402240 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 26089 (or 26079 counting only the distinct ones).

The product of its (nonzero) digits is 2560, while the sum is 26.

The square root of 158402240 is about 12585.7951675689. The cubic root of 158402240 is about 541.0703962752.

The spelling of 158402240 in words is "one hundred fifty-eight million, four hundred two thousand, two hundred forty".