158838428 has 48 divisors (see below), whose sum is σ = 329543424. Its totient is φ = 65573760.

The previous prime is 158838413. The next prime is 158838457. The reversal of 158838428 is 824838851.

158838428 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×158838428² = 50459292419022368, which contains 22 as substring.

It is a Smith number, since the sum of its digits (47) coincides with the sum of the digits of its prime factors.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 94451 + ... + 96117.

It is an arithmetic number, because the mean of its divisors is an integer number (6865488).

Almost surely, 2^158838428 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 158838428, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (164771712).

158838428 is an abundant number, since it is smaller than the sum of its proper divisors (170704996).

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

158838428 is a wasteful number, since it uses less digits than its factorization.

158838428 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1802 (or 1800 counting only the distinct ones).

The product of its digits is 491520, while the sum is 47.

The square root of 158838428 is about 12603.1118379549. Note that the first 3 decimals coincide. The cubic root of 158838428 is about 541.5665847861.

The spelling of 158838428 in words is "one hundred fifty-eight million, eight hundred thirty-eight thousand, four hundred twenty-eight".