2261605248 has 384 divisors, whose sum is σ = 7841433600. Its totient is φ = 612126720.

The previous prime is 2261605237. The next prime is 2261605259. The reversal of 2261605248 is 8425061622.

It is a happy number.

2261605248 is a `hidden beast` number, since 2 + 2 + 6 + 1 + 605 + 2 + 48 = 666.

It is an interprime number because it is at equal distance from previous prime (2261605237) and next prime (2261605259).

It is a tau number, because it is divible by the number of its divisors (384).

It is a super-2 number, since 2×2261605248² = 10229716595562283008, which contains 22 as substring.

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

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 20748618 + ... + 20748726.

It is an arithmetic number, because the mean of its divisors is an integer number (20420400).

Almost surely, 2^2261605248 is an apocalyptic number.

2261605248 is a gapful number since it is divisible by the number (28) 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 2261605248, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3920716800).

2261605248 is an abundant number, since it is smaller than the sum of its proper divisors (5579828352).

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

2261605248 is a wasteful number, since it uses less digits than its factorization.

2261605248 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 250 (or 235 counting only the distinct ones).

The product of its (nonzero) digits is 46080, while the sum is 36.

The square root of 2261605248 is about 47556.3376218144. The cubic root of 2261605248 is about 1312.6197498358.

The spelling of 2261605248 in words is "two billion, two hundred sixty-one million, six hundred five thousand, two hundred forty-eight".