2261287404 has 72 divisors (see below), whose sum is σ = 5789223440. Its totient is φ = 744163200.

The previous prime is 2261287393. The next prime is 2261287411. The reversal of 2261287404 is 4047821622.

2261287404 is a `hidden beast` number, since 226 + 1 + 28 + 7 + 404 = 666.

It is a super-2 number, since 2×2261287404² = 10226841446978118432, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1297974 + ... + 1299714.

Almost surely, 2^2261287404 is an apocalyptic number.

It is an amenable number.

2261287404 is an abundant number, since it is smaller than the sum of its proper divisors (3527936036).

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

2261287404 is a wasteful number, since it uses less digits than its factorization.

2261287404 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2191 (or 2186 counting only the distinct ones).

The product of its (nonzero) digits is 43008, while the sum is 36.

The square root of 2261287404 is about 47552.9957415934. The cubic root of 2261287404 is about 1312.5582554823.

The spelling of 2261287404 in words is "two billion, two hundred sixty-one million, two hundred eighty-seven thousand, four hundred four".