158828398 has 8 divisors (see below), whose sum is σ = 238507992. Its totient is φ = 79325736.

The previous prime is 158828387. The next prime is 158828401. The reversal of 158828398 is 893828851.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a super-2 number, since 2×158828398² = 50452920022492808, which contains 22 as substring.

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 3 ways as a sum of consecutive naturals, for example, 41965 + ... + 45592.

It is an arithmetic number, because the mean of its divisors is an integer number (29813499).

Almost surely, 2^158828398 is an apocalyptic number.

158828398 is a deficient number, since it is larger than the sum of its proper divisors (79679594).

158828398 is an equidigital number, since it uses as much as digits as its factorization.

158828398 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 88466.

The product of its digits is 1105920, while the sum is 52.

The square root of 158828398 is about 12602.7139140742. The cubic root of 158828398 is about 541.5551853046. Note that the first 3 decimals are identical.

The spelling of 158828398 in words is "one hundred fifty-eight million, eight hundred twenty-eight thousand, three hundred ninety-eight".