158346440 has 48 divisors (see below), whose sum is σ = 414452700. Its totient is φ = 54289536.

The previous prime is 158346439. The next prime is 158346473. The reversal of 158346440 is 44643851.

It can be written as a sum of positive squares in 2 ways, for example, as 143952004 + 14394436 = 11998^2 + 3794^2 .

It is a Harshad number since it is a multiple of its sum of digits (35).

It is a self number, because there is not a number n which added to its sum of digits gives 158346440.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 38435 + ... + 42354.

Almost surely, 2^158346440 is an apocalyptic number.

158346440 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

158346440 is an abundant number, since it is smaller than the sum of its proper divisors (256106260).

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

158346440 is a wasteful number, since it uses less digits than its factorization.

158346440 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 80814 (or 80803 counting only the distinct ones).

The product of its (nonzero) digits is 46080, while the sum is 35.

The square root of 158346440 is about 12583.5781874632. The cubic root of 158346440 is about 541.0068549305.

The spelling of 158346440 in words is "one hundred fifty-eight million, three hundred forty-six thousand, four hundred forty".