158869152 has 72 divisors (see below), whose sum is σ = 486548244. Its totient is φ = 48881664.

The previous prime is 158869121. The next prime is 158869153. The reversal of 158869152 is 251968851.

It is a happy number.

158869152 is a `hidden beast` number, since 1 + 588 + 69 + 1 + 5 + 2 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 154853136 + 4016016 = 12444^2 + 2004^2 .

It is a tau number, because it is divible by the number of its divisors (72).

It is a junction number, because it is equal to n+sod(n) for n = 158869098 and 158869107.

It is not an unprimeable number, because it can be changed into a prime (158869153) by changing a digit.

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, 17473 + ... + 24960.

Almost surely, 2^158869152 is an apocalyptic number.

158869152 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

158869152 is an abundant number, since it is smaller than the sum of its proper divisors (327679092).

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

158869152 is a wasteful number, since it uses less digits than its factorization.

158869152 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 42462 (or 42451 counting only the distinct ones).

The product of its digits is 172800, while the sum is 45.

The square root of 158869152 is about 12604.3306843323. The cubic root of 158869152 is about 541.6015008100.

The spelling of 158869152 in words is "one hundred fifty-eight million, eight hundred sixty-nine thousand, one hundred fifty-two".