158941440 has 432 divisors, whose sum is σ = 660686208. Its totient is φ = 35831808.

The previous prime is 158941397. The next prime is 158941507. The reversal of 158941440 is 44149851.

It is a tau number, because it is divible by the number of its divisors (432).

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

It is a junction number, because it is equal to n+sod(n) for n = 158941395 and 158941404.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 2177244 + ... + 2177316.

Almost surely, 2^158941440 is an apocalyptic number.

158941440 is a gapful number since it is divisible by the number (10) 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 158941440, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (330343104).

158941440 is an abundant number, since it is smaller than the sum of its proper divisors (501744768).

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

158941440 is an frugal number, since it uses more digits than its factorization.

158941440 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 116 (or 90 counting only the distinct ones).

The product of its (nonzero) digits is 23040, while the sum is 36.

The square root of 158941440 is about 12607.1979440318. The cubic root of 158941440 is about 541.6836341299.

The spelling of 158941440 in words is "one hundred fifty-eight million, nine hundred forty-one thousand, four hundred forty".