158434380 has 120 divisors (see below), whose sum is σ = 535317552. Its totient is φ = 38994048.

The previous prime is 158434379. The next prime is 158434399. The reversal of 158434380 is 83434851.

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

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 39 ways as a sum of consecutive naturals, for example, 17299 + ... + 24821.

Almost surely, 2^158434380 is an apocalyptic number.

158434380 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 158434380, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (267658776).

158434380 is an abundant number, since it is smaller than the sum of its proper divisors (376883172).

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

158434380 is a wasteful number, since it uses less digits than its factorization.

158434380 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7557 (or 7546 counting only the distinct ones).

The product of its (nonzero) digits is 46080, while the sum is 36.

The square root of 158434380 is about 12587.0719390969. The cubic root of 158434380 is about 541.1069884061.

The spelling of 158434380 in words is "one hundred fifty-eight million, four hundred thirty-four thousand, three hundred eighty".