2780500500 has 96 divisors (see below), whose sum is σ = 8996507520. Its totient is φ = 741463200.

The previous prime is 2780500447. The next prime is 2780500517. The reversal of 2780500500 is 50050872.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 89482 + ... + 116481.

It is an arithmetic number, because the mean of its divisors is an integer number (93713620).

Almost surely, 2^2780500500 is an apocalyptic number.

2780500500 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2780500500 is an abundant number, since it is smaller than the sum of its proper divisors (6216007020).

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

2780500500 is a wasteful number, since it uses less digits than its factorization.

2780500500 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 205991 (or 205973 counting only the distinct ones).

The product of its (nonzero) digits is 2800, while the sum is 27.

The square root of 2780500500 is about 52730.4513540326. The cubic root of 2780500500 is about 1406.1802454289.

The spelling of 2780500500 in words is "two billion, seven hundred eighty million, five hundred thousand, five hundred".