158243904 has 168 divisors, whose sum is σ = 558434240. Its totient is φ = 41720832.

The previous prime is 158243903. The next prime is 158243927. The reversal of 158243904 is 409342851.

It is a tau number, because it is divible by the number of its divisors (168).

It is a super-2 number, since 2×158243904² = 50082266306322432, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a zygodrome in base 12.

It is not an unprimeable number, because it can be changed into a prime (158243903) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 50907 + ... + 53925.

Almost surely, 2^158243904 is an apocalyptic number.

158243904 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 158243904, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (279217120).

158243904 is an abundant number, since it is smaller than the sum of its proper divisors (400190336).

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

158243904 is a wasteful number, since it uses less digits than its factorization.

158243904 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3057 (or 3044 counting only the distinct ones).

The product of its (nonzero) digits is 34560, while the sum is 36.

The square root of 158243904 is about 12579.5033288282. The cubic root of 158243904 is about 540.8900547953.

The spelling of 158243904 in words is "one hundred fifty-eight million, two hundred forty-three thousand, nine hundred four".