252149670 has 48 divisors (see below), whose sum is σ = 657757152. Its totient is φ = 67017600.

The previous prime is 252149663. The next prime is 252149671. The reversal of 252149670 is 76941252.

It is a super-2 number, since 2×252149670² = 127158912162217800, which contains 22 as substring.

It is an alternating number because its digits alternate between even and odd.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (252149671) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 23695 + ... + 32645.

It is an arithmetic number, because the mean of its divisors is an integer number (13703274).

Almost surely, 2^252149670 is an apocalyptic number.

252149670 is an abundant number, since it is smaller than the sum of its proper divisors (405607482).

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

252149670 is a wasteful number, since it uses less digits than its factorization.

252149670 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9277 (or 9274 counting only the distinct ones).

The product of its (nonzero) digits is 30240, while the sum is 36.

The square root of 252149670 is about 15879.2213285161. The cubic root of 252149670 is about 631.7609838982.

The spelling of 252149670 in words is "two hundred fifty-two million, one hundred forty-nine thousand, six hundred seventy".