2280144890 has 64 divisors (see below), whose sum is σ = 4471534368. Its totient is φ = 833740800.

The previous prime is 2280144883. The next prime is 2280144899. The reversal of 2280144890 is 984410822.

It can be written as a sum of positive squares in 16 ways, for example, as 145612489 + 2134532401 = 12067^2 + 46201^2 .

It is a super-2 number, since 2×2280144890² = 10398121438786224200, which contains 22 as substring.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (2280144899) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1930100 + ... + 1931280.

Almost surely, 2^2280144890 is an apocalyptic number.

2280144890 is a deficient number, since it is larger than the sum of its proper divisors (2191389478).

2280144890 is a wasteful number, since it uses less digits than its factorization.

2280144890 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1523.

The product of its (nonzero) digits is 36864, while the sum is 38.

The square root of 2280144890 is about 47750.8627147196. The cubic root of 2280144890 is about 1316.1967525320.

The spelling of 2280144890 in words is "two billion, two hundred eighty million, one hundred forty-four thousand, eight hundred ninety".