2249640774 has 96 divisors (see below), whose sum is σ = 5311488000. Its totient is φ = 685703232.

The previous prime is 2249640727. The next prime is 2249640779. The reversal of 2249640774 is 4770469422.

It is a super-2 number, since 2×2249640774² = 10121767224086638152, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2249640779) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 1758267 + ... + 1759545.

It is an arithmetic number, because the mean of its divisors is an integer number (55328000).

Almost surely, 2^2249640774 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 2249640774, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2655744000).

2249640774 is an abundant number, since it is smaller than the sum of its proper divisors (3061847226).

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

2249640774 is a wasteful number, since it uses less digits than its factorization.

2249640774 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1482 (or 1479 counting only the distinct ones).

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

The square root of 2249640774 is about 47430.3781768604. The cubic root of 2249640774 is about 1310.3009572115.

The spelling of 2249640774 in words is "two billion, two hundred forty-nine million, six hundred forty thousand, seven hundred seventy-four".