158030028 has 120 divisors (see below), whose sum is σ = 471284352. Its totient is φ = 45743616.

The previous prime is 158030023. The next prime is 158030057. The reversal of 158030028 is 820030851.

It is a happy number.

158030028 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a junction number, because it is equal to n+sod(n) for n = 158029983 and 158030010.

It is not an unprimeable number, because it can be changed into a prime (158030023) by changing a digit.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 70501 + ... + 72707.

Almost surely, 2^158030028 is an apocalyptic number.

158030028 is a gapful number since it is divisible by the number (18) 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 158030028, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (235642176).

158030028 is an abundant number, since it is smaller than the sum of its proper divisors (313254324).

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

158030028 is a wasteful number, since it uses less digits than its factorization.

158030028 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2253 (or 2242 counting only the distinct ones).

The product of its (nonzero) digits is 1920, while the sum is 27.

The square root of 158030028 is about 12570.9994829369. Note that the first 3 decimals coincide. The cubic root of 158030028 is about 540.6462632910.

Adding to 158030028 its reverse (820030851), we get a palindrome (978060879).

The spelling of 158030028 in words is "one hundred fifty-eight million, thirty thousand, twenty-eight".