253648890 has 48 divisors (see below), whose sum is σ = 719443296. Its totient is φ = 61490400.

The previous prime is 253648817. The next prime is 253648909. The reversal of 253648890 is 98846352.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 127116 + ... + 129095.

It is an arithmetic number, because the mean of its divisors is an integer number (14988402).

Almost surely, 2^253648890 is an apocalyptic number.

253648890 is an abundant number, since it is smaller than the sum of its proper divisors (465794406).

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

253648890 is a wasteful number, since it uses less digits than its factorization.

253648890 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 256235 (or 256232 counting only the distinct ones).

The product of its (nonzero) digits is 414720, while the sum is 45.

The square root of 253648890 is about 15926.3583408135. The cubic root of 253648890 is about 633.0106090478.

The spelling of 253648890 in words is "two hundred fifty-three million, six hundred forty-eight thousand, eight hundred ninety".