156869450 has 12 divisors (see below), whose sum is σ = 291777270. Its totient is φ = 62747760.

The previous prime is 156869441. The next prime is 156869477. The reversal of 156869450 is 54968651.

It can be written as a sum of positive squares in 3 ways, for example, as 151856329 + 5013121 = 12323^2 + 2239^2 .

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 5 ways as a sum of consecutive naturals, for example, 1568645 + ... + 1568744.

Almost surely, 2^156869450 is an apocalyptic number.

156869450 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

156869450 is a deficient number, since it is larger than the sum of its proper divisors (134907820).

156869450 is a wasteful number, since it uses less digits than its factorization.

156869450 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3137401 (or 3137396 counting only the distinct ones).

The product of its (nonzero) digits is 259200, while the sum is 44.

The square root of 156869450 is about 12524.7534905881. The cubic root of 156869450 is about 539.3195017478.

The spelling of 156869450 in words is "one hundred fifty-six million, eight hundred sixty-nine thousand, four hundred fifty".