252226136 has 8 divisors (see below), whose sum is σ = 472924020. Its totient is φ = 126113064.

The previous prime is 252226097. The next prime is 252226141. The reversal of 252226136 is 631622252.

It is a tau number, because it is divible by the number of its divisors (8).

It is a junction number, because it is equal to n+sod(n) for n = 252226099 and 252226108.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15764126 + ... + 15764141.

Almost surely, 2^252226136 is an apocalyptic number.

It is an amenable number.

252226136 is a deficient number, since it is larger than the sum of its proper divisors (220697884).

252226136 is a wasteful number, since it uses less digits than its factorization.

252226136 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 31528273 (or 31528269 counting only the distinct ones).

The product of its digits is 8640, while the sum is 29.

The square root of 252226136 is about 15881.6288837134. The cubic root of 252226136 is about 631.8248392967.

Adding to 252226136 its reverse (631622252), we get a palindrome (883848388).

The spelling of 252226136 in words is "two hundred fifty-two million, two hundred twenty-six thousand, one hundred thirty-six".