28100296 has 32 divisors (see below), whose sum is σ = 62835840. Its totient is φ = 11518848.

The previous prime is 28100287. The next prime is 28100311. The reversal of 28100296 is 69200182.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (28).

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 9621 + ... + 12196.

It is an arithmetic number, because the mean of its divisors is an integer number (1963620).

Almost surely, 2^28100296 is an apocalyptic number.

It is an amenable number.

28100296 is an abundant number, since it is smaller than the sum of its proper divisors (34735544).

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

28100296 is a wasteful number, since it uses less digits than its factorization.

28100296 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21853 (or 21849 counting only the distinct ones).

The product of its (nonzero) digits is 1728, while the sum is 28.

The square root of 28100296 is about 5300.9712317650. The cubic root of 28100296 is about 304.0210338632.

The spelling of 28100296 in words is "twenty-eight million, one hundred thousand, two hundred ninety-six".