28220911010 has 8 divisors (see below), whose sum is σ = 50797639836. Its totient is φ = 11288364400.

The previous prime is 28220911003. The next prime is 28220911021. The reversal of 28220911010 is 1011902282.

It can be written as a sum of positive squares in 2 ways, for example, as 26598674281 + 1622236729 = 163091^2 + 40277^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1411045541 + ... + 1411045560.

Almost surely, 2^28220911010 is an apocalyptic number.

28220911010 is a deficient number, since it is larger than the sum of its proper divisors (22576728826).

28220911010 is a wasteful number, since it uses less digits than its factorization.

28220911010 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2822091108.

The product of its (nonzero) digits is 576, while the sum is 26.

The spelling of 28220911010 in words is "twenty-eight billion, two hundred twenty million, nine hundred eleven thousand, ten".