28099476 has 36 divisors (see below), whose sum is σ = 71233344. Its totient is φ = 9339600.

The previous prime is 28099451. The next prime is 28099493. The reversal of 28099476 is 67499082.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (36).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 14611 + ... + 16421.

It is an arithmetic number, because the mean of its divisors is an integer number (1978704).

Almost surely, 2^28099476 is an apocalyptic number.

It is an amenable number.

28099476 is an abundant number, since it is smaller than the sum of its proper divisors (43133868).

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

28099476 is a wasteful number, since it uses less digits than its factorization.

28099476 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2252 (or 2247 counting only the distinct ones).

The product of its (nonzero) digits is 217728, while the sum is 45.

The square root of 28099476 is about 5300.8938868836. The cubic root of 28099476 is about 304.0180766028.

The spelling of 28099476 in words is "twenty-eight million, ninety-nine thousand, four hundred seventy-six".