253663020 has 144 divisors (see below), whose sum is σ = 848239392. Its totient is φ = 60963840.

The previous prime is 253663013. The next prime is 253663037. The reversal of 253663020 is 20366352.

253663020 is a `hidden beast` number, since 2 + 5 + 3 + 6 + 630 + 20 = 666.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 99360 + ... + 101880.

Almost surely, 2^253663020 is an apocalyptic number.

253663020 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 253663020, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (424119696).

253663020 is an abundant number, since it is smaller than the sum of its proper divisors (594576372).

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

253663020 is a wasteful number, since it uses less digits than its factorization.

253663020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2592 (or 2587 counting only the distinct ones).

The product of its (nonzero) digits is 6480, while the sum is 27.

The square root of 253663020 is about 15926.8019388702. The cubic root of 253663020 is about 633.0223631880.

It can be divided in two parts, 2536 and 63020, that added together give a palindrome (65556).

The spelling of 253663020 in words is "two hundred fifty-three million, six hundred sixty-three thousand, twenty".