2216992500 has 90 divisors (see below), whose sum is σ = 7002909914. Its totient is φ = 591192000.

The previous prime is 2216992489. The next prime is 2216992501. The reversal of 2216992500 is 52996122.

It is a happy number.

2216992500 is a `hidden beast` number, since 2 + 2 + 1 + 69 + 92 + 500 = 666.

It can be written as a sum of positive squares in 5 ways, for example, as 601917156 + 1615075344 = 24534^2 + 40188^2 .

It is a tau number, because it is divible by the number of its divisors (90).

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2216992501) by changing a digit.

It is a polite number, since it can be written in 29 ways as a sum of consecutive naturals, for example, 26767 + ... + 71766.

Almost surely, 2^2216992500 is an apocalyptic number.

2216992500 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2216992500 is an abundant number, since it is smaller than the sum of its proper divisors (4785917414).

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

2216992500 is a wasteful number, since it uses less digits than its factorization.

2216992500 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 98563 (or 98543 counting only the distinct ones).

The product of its (nonzero) digits is 19440, while the sum is 36.

The square root of 2216992500 is about 47084.9498247582. The cubic root of 2216992500 is about 1303.9313927860.

The spelling of 2216992500 in words is "two billion, two hundred sixteen million, nine hundred ninety-two thousand, five hundred".