158638432 has 24 divisors (see below), whose sum is σ = 312640776. Its totient is φ = 79237632.

The previous prime is 158638423. The next prime is 158638457. The reversal of 158638432 is 234836851.

It is a congruent number.

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 3 ways as a sum of consecutive naturals, for example, 39928 + ... + 43720.

It is an arithmetic number, because the mean of its divisors is an integer number (13026699).

Almost surely, 2^158638432 is an apocalyptic number.

It is an amenable number.

158638432 is a deficient number, since it is larger than the sum of its proper divisors (154002344).

158638432 is a wasteful number, since it uses less digits than its factorization.

158638432 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5110 (or 5102 counting only the distinct ones).

The product of its digits is 138240, while the sum is 40.

The square root of 158638432 is about 12595.1749491621. The cubic root of 158638432 is about 541.3391909440.

The spelling of 158638432 in words is "one hundred fifty-eight million, six hundred thirty-eight thousand, four hundred thirty-two".