158251632 has 160 divisors (see below), whose sum is σ = 521109504. Its totient is φ = 40185600.

The previous prime is 158251549. The next prime is 158251633. The reversal of 158251632 is 236152851.

It is a Harshad number since it is a multiple of its sum of digits (33).

It is a junction number, because it is equal to n+sod(n) for n = 158251593 and 158251602.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (158251633) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 173257 + ... + 174167.

Almost surely, 2^158251632 is an apocalyptic number.

158251632 is a gapful number since it is divisible by the number (12) 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 158251632, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (260554752).

158251632 is an abundant number, since it is smaller than the sum of its proper divisors (362857872).

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

158251632 is a wasteful number, since it uses less digits than its factorization.

158251632 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 987 (or 981 counting only the distinct ones).

The product of its digits is 14400, while the sum is 33.

The square root of 158251632 is about 12579.8104914184. The cubic root of 158251632 is about 540.8988596216.

The spelling of 158251632 in words is "one hundred fifty-eight million, two hundred fifty-one thousand, six hundred thirty-two".