251046480 has 160 divisors (see below), whose sum is σ = 846802944. Its totient is φ = 61267968.

The previous prime is 251046473. The next prime is 251046527. The reversal of 251046480 is 84640152.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 150129 + ... + 151791.

Almost surely, 2^251046480 is an apocalyptic number.

251046480 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 251046480, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (423401472).

251046480 is an abundant number, since it is smaller than the sum of its proper divisors (595756464).

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

251046480 is a wasteful number, since it uses less digits than its factorization.

251046480 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1733 (or 1727 counting only the distinct ones).

The product of its (nonzero) digits is 7680, while the sum is 30.

The square root of 251046480 is about 15844.4463456443. The cubic root of 251046480 is about 630.8382894539.

The spelling of 251046480 in words is "two hundred fifty-one million, forty-six thousand, four hundred eighty".