252697326 has 32 divisors (see below), whose sum is σ = 591030528. Its totient is φ = 70519680.

The previous prime is 252697303. The next prime is 252697327. The reversal of 252697326 is 623796252.

It is a Harshad number since it is a multiple of its sum of digits (42).

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (252697327) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 68155 + ... + 71766.

It is an arithmetic number, because the mean of its divisors is an integer number (18469704).

Almost surely, 2^252697326 is an apocalyptic number.

252697326 is an abundant number, since it is smaller than the sum of its proper divisors (338333202).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

252697326 is a wasteful number, since it uses less digits than its factorization.

252697326 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 139976.

The product of its digits is 272160, while the sum is 42.

The square root of 252697326 is about 15896.4563975749. The cubic root of 252697326 is about 632.2180371847.

The spelling of 252697326 in words is "two hundred fifty-two million, six hundred ninety-seven thousand, three hundred twenty-six".