249274746 has 96 divisors (see below), whose sum is σ = 654151680. Its totient is φ = 69661296.

The previous prime is 249274687. The next prime is 249274777. The reversal of 249274746 is 647472942.

It is a super-4 number, since 4×249274746⁴ (a number of 35 digits) contains 4444 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 159115 + ... + 160673.

It is an arithmetic number, because the mean of its divisors is an integer number (6814080).

Almost surely, 2^249274746 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 249274746, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (327075840).

249274746 is an abundant number, since it is smaller than the sum of its proper divisors (404876934).

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

249274746 is a wasteful number, since it uses less digits than its factorization.

249274746 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1630 (or 1618 counting only the distinct ones).

The product of its digits is 677376, while the sum is 45.

The square root of 249274746 is about 15788.4370980791. The cubic root of 249274746 is about 629.3507597331.

The spelling of 249274746 in words is "two hundred forty-nine million, two hundred seventy-four thousand, seven hundred forty-six".