156009998 has 8 divisors (see below), whose sum is σ = 234411408. Its totient is φ = 77872864.

The previous prime is 156009941. The next prime is 156010031. The reversal of 156009998 is 899900651.

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

It is a congruent number.

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 3 ways as a sum of consecutive naturals, for example, 64586 + ... + 66957.

It is an arithmetic number, because the mean of its divisors is an integer number (29301426).

Almost surely, 2^156009998 is an apocalyptic number.

156009998 is a deficient number, since it is larger than the sum of its proper divisors (78401410).

156009998 is a wasteful number, since it uses less digits than its factorization.

156009998 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 132138.

The product of its (nonzero) digits is 174960, while the sum is 47.

The square root of 156009998 is about 12490.3962307046. The cubic root of 156009998 is about 538.3327612536.

The spelling of 156009998 in words is "one hundred fifty-six million, nine thousand, nine hundred ninety-eight".