152785281 has 16 divisors (see below), whose sum is σ = 222962688. Its totient is φ = 92293200.

The previous prime is 152785249. The next prime is 152785309. The reversal of 152785281 is 182587251.

It is not a de Polignac number, because 152785281 - 2⁵ = 152785249 is a prime.

It is a super-2 number, since 2×152785281² = 46686684180497922, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (152785201) by changing a digit.

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 15 ways as a sum of consecutive naturals, for example, 2820 + ... + 17706.

It is an arithmetic number, because the mean of its divisors is an integer number (13935168).

Almost surely, 2^152785281 is an apocalyptic number.

152785281 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

152785281 is a deficient number, since it is larger than the sum of its proper divisors (70177407).

152785281 is a wasteful number, since it uses less digits than its factorization.

152785281 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15212.

The product of its digits is 44800, while the sum is 39.

The square root of 152785281 is about 12360.6343283830. The cubic root of 152785281 is about 534.5978064353.

The spelling of 152785281 in words is "one hundred fifty-two million, seven hundred eighty-five thousand, two hundred eighty-one".