28236918190 has 16 divisors (see below), whose sum is σ = 54736180128. Its totient is φ = 10425938976.

The previous prime is 28236918169. The next prime is 28236918197. The reversal of 28236918190 is 9181963282.

It is a super-2 number, since 2×28236918190² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28236918197) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 108603402 + ... + 108603661.

It is an arithmetic number, because the mean of its divisors is an integer number (3421011258).

Almost surely, 2^28236918190 is an apocalyptic number.

28236918190 is a deficient number, since it is larger than the sum of its proper divisors (26499261938).

28236918190 is a wasteful number, since it uses less digits than its factorization.

28236918190 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 217207083.

The product of its (nonzero) digits is 373248, while the sum is 49.

The spelling of 28236918190 in words is "twenty-eight billion, two hundred thirty-six million, nine hundred eighteen thousand, one hundred ninety".