253320040 has 32 divisors (see below), whose sum is σ = 579636000. Its totient is φ = 99609664.

The previous prime is 253320031. The next prime is 253320047. The reversal of 253320040 is 40023352.

It is not an unprimeable number, because it can be changed into a prime (253320047) 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, 51310 + ... + 56029.

It is an arithmetic number, because the mean of its divisors is an integer number (18113625).

Almost surely, 2^253320040 is an apocalyptic number.

253320040 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

253320040 is an abundant number, since it is smaller than the sum of its proper divisors (326315960).

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

253320040 is a wasteful number, since it uses less digits than its factorization.

253320040 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 107409 (or 107405 counting only the distinct ones).

The product of its (nonzero) digits is 720, while the sum is 19.

The square root of 253320040 is about 15916.0309122595. The cubic root of 253320040 is about 632.7369294688.

Adding to 253320040 its reverse (40023352), we get a palindrome (293343392).

The spelling of 253320040 in words is "two hundred fifty-three million, three hundred twenty thousand, forty".