152687813 has 16 divisors (see below), whose sum is σ = 162736560. Its totient is φ = 143001600.

The previous prime is 152687809. The next prime is 152687831. The reversal of 152687813 is 318786251.

152687813 = 8737² + 8738².

It can be written as a sum of positive squares in 8 ways, for example, as 91204 + 152596609 = 302^2 + 12353^2 .

It is a cyclic number.

It is not a de Polignac number, because 152687813 - 2² = 152687809 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (41).

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (152687833) by changing a digit.

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 15 ways as a sum of consecutive naturals, for example, 333881 + ... + 334337.

It is an arithmetic number, because the mean of its divisors is an integer number (10171035).

Almost surely, 2^152687813 is an apocalyptic number.

152687813 is the 8738-th centered square number.

It is an amenable number.

152687813 is a deficient number, since it is larger than the sum of its proper divisors (10048747).

152687813 is a wasteful number, since it uses less digits than its factorization.

152687813 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 808.

The product of its digits is 80640, while the sum is 41.

The square root of 152687813 is about 12356.6910214669. The cubic root of 152687813 is about 534.4841016272.

The spelling of 152687813 in words is "one hundred fifty-two million, six hundred eighty-seven thousand, eight hundred thirteen".