28098276 has 24 divisors (see below), whose sum is σ = 67678464. Its totient is φ = 9063840.

The previous prime is 28098269. The next prime is 28098277. The reversal of 28098276 is 67289082.

It is a happy number.

It is a super-2 number, since 2×28098276² = 1579026228344352, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (28098277) 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, 37395 + ... + 38138.

It is an arithmetic number, because the mean of its divisors is an integer number (2819936).

Almost surely, 2^28098276 is an apocalyptic number.

It is an amenable number.

28098276 is an abundant number, since it is smaller than the sum of its proper divisors (39580188).

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

28098276 is a wasteful number, since it uses less digits than its factorization.

28098276 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 75571 (or 75569 counting only the distinct ones).

The product of its (nonzero) digits is 96768, while the sum is 42.

The square root of 28098276 is about 5300.7806972181. The cubic root of 28098276 is about 304.0137488011.

The spelling of 28098276 in words is "twenty-eight million, ninety-eight thousand, two hundred seventy-six".