2785764904 has 48 divisors (see below), whose sum is σ = 5838549120. Its totient is φ = 1244243520.

The previous prime is 2785764889. The next prime is 2785764929. The reversal of 2785764904 is 4094675872.

It is a super-2 number, since 2×2785764904² = 15520972200716258432, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (52).

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 11 ways as a sum of consecutive naturals, for example, 8679 + ... + 75145.

It is an arithmetic number, because the mean of its divisors is an integer number (121636440).

Almost surely, 2^2785764904 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 2785764904, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2919274560).

2785764904 is an abundant number, since it is smaller than the sum of its proper divisors (3052784216).

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

2785764904 is a wasteful number, since it uses less digits than its factorization.

2785764904 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 66530 (or 66513 counting only the distinct ones).

The product of its (nonzero) digits is 3386880, while the sum is 52.

The square root of 2785764904 is about 52780.3458116750. The cubic root of 2785764904 is about 1407.0671401803.

The spelling of 2785764904 in words is "two billion, seven hundred eighty-five million, seven hundred sixty-four thousand, nine hundred four".