2246778400 has 72 divisors (see below), whose sum is σ = 5495249844. Its totient is φ = 897024000.

The previous prime is 2246778397. The next prime is 2246778419. The reversal of 2246778400 is 48776422.

It can be written as a sum of positive squares in 6 ways, for example, as 1821923856 + 424854544 = 42684^2 + 20612^2 .

It is a Harshad number since it is a multiple of its sum of digits (40).

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 478464 + ... + 483136.

Almost surely, 2^2246778400 is an apocalyptic number.

2246778400 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 2246778400, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2747624922).

2246778400 is an abundant number, since it is smaller than the sum of its proper divisors (3248471444).

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

2246778400 is a wasteful number, since it uses less digits than its factorization.

2246778400 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5294 (or 5281 counting only the distinct ones).

The product of its (nonzero) digits is 150528, while the sum is 40.

The square root of 2246778400 is about 47400.1940924296. The cubic root of 2246778400 is about 1309.7449924156.

The spelling of 2246778400 in words is "two billion, two hundred forty-six million, seven hundred seventy-eight thousand, four hundred".