2279448540 has 120 divisors (see below), whose sum is σ = 7257787152. Its totient is φ = 598752000.

The previous prime is 2279448491. The next prime is 2279448571. The reversal of 2279448540 is 458449722.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 98040 + ... + 119040.

Almost surely, 2^2279448540 is an apocalyptic number.

2279448540 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 2279448540, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3628893576).

2279448540 is an abundant number, since it is smaller than the sum of its proper divisors (4978338612).

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

2279448540 is a wasteful number, since it uses less digits than its factorization.

2279448540 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21089 (or 21078 counting only the distinct ones).

The product of its (nonzero) digits is 645120, while the sum is 45.

The square root of 2279448540 is about 47743.5706666353. The cubic root of 2279448540 is about 1316.0627512629.

The spelling of 2279448540 in words is "two billion, two hundred seventy-nine million, four hundred forty-eight thousand, five hundred forty".