1252343808 has 240 divisors, whose sum is σ = 3932040000. Its totient is φ = 392822784.

The previous prime is 1252343783. The next prime is 1252343809. The reversal of 1252343808 is 8083432521.

1252343808 is a `hidden beast` number, since 12 + 523 + 43 + 80 + 8 = 666.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1252343809) 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, 8404918 + ... + 8405066.

It is an arithmetic number, because the mean of its divisors is an integer number (16383500).

Almost surely, 2^1252343808 is an apocalyptic number.

1252343808 is a gapful number since it is divisible by the number (18) 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 1252343808, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1966020000).

1252343808 is an abundant number, since it is smaller than the sum of its proper divisors (2679696192).

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

1252343808 is an equidigital number, since it uses as much as digits as its factorization.

1252343808 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 205 (or 173 counting only the distinct ones).

The product of its (nonzero) digits is 46080, while the sum is 36.

The square root of 1252343808 is about 35388.4699867061. The cubic root of 1252343808 is about 1077.8902021465.

The spelling of 1252343808 in words is "one billion, two hundred fifty-two million, three hundred forty-three thousand, eight hundred eight".