252105340 has 24 divisors (see below), whose sum is σ = 529889472. Its totient is φ = 100752960.

The previous prime is 252105331. The next prime is 252105341. The reversal of 252105340 is 43501252.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (252105341) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 20605 + ... + 30475.

It is an arithmetic number, because the mean of its divisors is an integer number (22078728).

Almost surely, 2^252105340 is an apocalyptic number.

252105340 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

252105340 is an abundant number, since it is smaller than the sum of its proper divisors (277784132).

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

252105340 is a wasteful number, since it uses less digits than its factorization.

252105340 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11157 (or 11155 counting only the distinct ones).

The product of its (nonzero) digits is 1200, while the sum is 22.

The square root of 252105340 is about 15877.8254178587. The cubic root of 252105340 is about 631.7239587908.

Adding to 252105340 its reverse (43501252), we get a palindrome (295606592).

The spelling of 252105340 in words is "two hundred fifty-two million, one hundred five thousand, three hundred forty".