252215412 has 12 divisors (see below), whose sum is σ = 588502656. Its totient is φ = 84071800.

The previous prime is 252215389. The next prime is 252215413. The reversal of 252215412 is 214512252.

It is a tau number, because it is divible by the number of its divisors (12).

It is a super-2 number, since 2×252215412² = 127225228100659488, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (252215413) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 10508964 + ... + 10508987.

It is an arithmetic number, because the mean of its divisors is an integer number (49041888).

Almost surely, 2^252215412 is an apocalyptic number.

It is an amenable number.

252215412 is an abundant number, since it is smaller than the sum of its proper divisors (336287244).

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

252215412 is a wasteful number, since it uses less digits than its factorization.

252215412 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21017958 (or 21017956 counting only the distinct ones).

The product of its digits is 1600, while the sum is 24.

The square root of 252215412 is about 15881.2912573254. The cubic root of 252215412 is about 631.8158846529.

Adding to 252215412 its reverse (214512252), we get a palindrome (466727664).

The spelling of 252215412 in words is "two hundred fifty-two million, two hundred fifteen thousand, four hundred twelve".