252040040 has 32 divisors (see below), whose sum is σ = 648103680. Its totient is φ = 86413632.

The previous prime is 252040037. The next prime is 252040057. The reversal of 252040040 is 40040252.

252040040 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 449792 + ... + 450351.

It is an arithmetic number, because the mean of its divisors is an integer number (20253240).

Almost surely, 2^252040040 is an apocalyptic number.

252040040 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

252040040 is an abundant number, since it is smaller than the sum of its proper divisors (396063640).

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

252040040 is a wasteful number, since it uses less digits than its factorization.

252040040 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 900161 (or 900157 counting only the distinct ones).

The product of its (nonzero) digits is 320, while the sum is 17.

The square root of 252040040 is about 15875.7689577545. The cubic root of 252040040 is about 631.6694113060.

Adding to 252040040 its reverse (40040252), we get a palindrome (292080292).

The spelling of 252040040 in words is "two hundred fifty-two million, forty thousand, forty".