2790890856 has 64 divisors (see below), whose sum is σ = 8348827200. Its totient is φ = 858734784.

The previous prime is 2790890803. The next prime is 2790890857. The reversal of 2790890856 is 6580980972.

It is a happy number.

2790890856 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is not an unprimeable number, because it can be changed into a prime (2790890857) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 494146 + ... + 499761.

It is an arithmetic number, because the mean of its divisors is an integer number (130450425).

Almost surely, 2^2790890856 is an apocalyptic number.

2790890856 is a gapful number since it is divisible by the number (26) formed by its first and last digit.

It is an amenable number.

2790890856 is an abundant number, since it is smaller than the sum of its proper divisors (5557936344).

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

2790890856 is a wasteful number, since it uses less digits than its factorization.

2790890856 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 993935 (or 993925 counting only the distinct ones).

The product of its (nonzero) digits is 2177280, while the sum is 54.

The square root of 2790890856 is about 52828.8827820540. The cubic root of 2790890856 is about 1407.9296369043.

The spelling of 2790890856 in words is "two billion, seven hundred ninety million, eight hundred ninety thousand, eight hundred fifty-six".