252766390 has 32 divisors (see below), whose sum is σ = 462936384. Its totient is φ = 99348480.

The previous prime is 252766379. The next prime is 252766399. The reversal of 252766390 is 93667252.

252766390 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (252766399) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 409362 + ... + 409978.

It is an arithmetic number, because the mean of its divisors is an integer number (14466762).

Almost surely, 2^252766390 is an apocalyptic number.

252766390 is a deficient number, since it is larger than the sum of its proper divisors (210169994).

252766390 is a wasteful number, since it uses less digits than its factorization.

252766390 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1272.

The product of its (nonzero) digits is 136080, while the sum is 40.

The square root of 252766390 is about 15898.6285572058. The cubic root of 252766390 is about 632.2756285200.

The spelling of 252766390 in words is "two hundred fifty-two million, seven hundred sixty-six thousand, three hundred ninety".