252781412 has 18 divisors (see below), whose sum is σ = 479014578. Its totient is φ = 116668032.

The previous prime is 252781411. The next prime is 252781423. The reversal of 252781412 is 214187252.

It can be written as a sum of positive squares in 3 ways, for example, as 98596 + 252682816 = 314^2 + 15896^2 .

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

It is not an unprimeable number, because it can be changed into a prime (252781411) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 186293 + ... + 187644.

It is an arithmetic number, because the mean of its divisors is an integer number (26611921).

Almost surely, 2^252781412 is an apocalyptic number.

It is an amenable number.

252781412 is a deficient number, since it is larger than the sum of its proper divisors (226233166).

252781412 is a wasteful number, since it uses less digits than its factorization.

252781412 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 373967 (or 373952 counting only the distinct ones).

The product of its digits is 8960, while the sum is 32.

The square root of 252781412 is about 15899.1009808731. The cubic root of 252781412 is about 632.2881537300.

The spelling of 252781412 in words is "two hundred fifty-two million, seven hundred eighty-one thousand, four hundred twelve".