2788902870 has 128 divisors (see below), whose sum is σ = 7658582400. Its totient is φ = 643891200.

The previous prime is 2788902869. The next prime is 2788902871. The reversal of 2788902870 is 782098872.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (2788902869) and next prime (2788902871).

It is a Harshad number since it is a multiple of its sum of digits (51).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2788902871) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 2658106 + ... + 2659154.

It is an arithmetic number, because the mean of its divisors is an integer number (59832675).

Almost surely, 2^2788902870 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 2788902870, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3829291200).

2788902870 is an abundant number, since it is smaller than the sum of its proper divisors (4869679530).

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

2788902870 is a wasteful number, since it uses less digits than its factorization.

2788902870 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1490.

The product of its (nonzero) digits is 903168, while the sum is 51.

The square root of 2788902870 is about 52810.0640976699. The cubic root of 2788902870 is about 1407.5952622800.

The spelling of 2788902870 in words is "two billion, seven hundred eighty-eight million, nine hundred two thousand, eight hundred seventy".