253850690 has 16 divisors (see below), whose sum is σ = 459459000. Its totient is φ = 100978560.

The previous prime is 253850689. The next prime is 253850693. The reversal of 253850690 is 96058352.

It can be written as a sum of positive squares in 4 ways, for example, as 112169281 + 141681409 = 10591^2 + 11903^2 .

It is a super-2 number, since 2×253850690² = 128880345626952200, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (253850693) 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, 68315 + ... + 71934.

Almost surely, 2^253850690 is an apocalyptic number.

253850690 is a deficient number, since it is larger than the sum of its proper divisors (205608310).

253850690 is a wasteful number, since it uses less digits than its factorization.

253850690 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 140437.

The product of its (nonzero) digits is 64800, while the sum is 38.

The square root of 253850690 is about 15932.6924905993. The cubic root of 253850690 is about 633.1784364191.

The spelling of 253850690 in words is "two hundred fifty-three million, eight hundred fifty thousand, six hundred ninety".