156438285 has 8 divisors (see below), whose sum is σ = 250301280. Its totient is φ = 83433744.

The previous prime is 156438277. The next prime is 156438313. The reversal of 156438285 is 582834651.

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

It is not a de Polignac number, because 156438285 - 2³ = 156438277 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5214595 + ... + 5214624.

It is an arithmetic number, because the mean of its divisors is an integer number (31287660).

Almost surely, 2^156438285 is an apocalyptic number.

156438285 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

156438285 is a deficient number, since it is larger than the sum of its proper divisors (93862995).

156438285 is a wasteful number, since it uses less digits than its factorization.

156438285 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10429227.

The product of its digits is 230400, while the sum is 42.

The square root of 156438285 is about 12507.5291324866. The cubic root of 156438285 is about 538.8249311246.

The spelling of 156438285 in words is "one hundred fifty-six million, four hundred thirty-eight thousand, two hundred eighty-five".