251948412 has 36 divisors (see below), whose sum is σ = 637356720. Its totient is φ = 83918592.

The previous prime is 251948401. The next prime is 251948413. The reversal of 251948412 is 214849152.

It is a tau number, because it is divible by the number of its divisors (36).

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 (251948413) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 80289 + ... + 83367.

Almost surely, 2^251948412 is an apocalyptic number.

It is an amenable number.

251948412 is an abundant number, since it is smaller than the sum of its proper divisors (385408308).

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

251948412 is a wasteful number, since it uses less digits than its factorization.

251948412 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5362 (or 5357 counting only the distinct ones).

The product of its digits is 23040, while the sum is 36.

The square root of 251948412 is about 15872.8829139511. The cubic root of 251948412 is about 631.5928551894.

The spelling of 251948412 in words is "two hundred fifty-one million, nine hundred forty-eight thousand, four hundred twelve".