28620296 has 16 divisors (see below), whose sum is σ = 54972540. Its totient is φ = 13960960.

The previous prime is 28620287. The next prime is 28620311. The reversal of 28620296 is 69202682.

It can be written as a sum of positive squares in 2 ways, for example, as 19096900 + 9523396 = 4370^2 + 3086^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 43301 + ... + 43956.

Almost surely, 2^28620296 is an apocalyptic number.

It is an amenable number.

28620296 is a deficient number, since it is larger than the sum of its proper divisors (26352244).

28620296 is a wasteful number, since it uses less digits than its factorization.

28620296 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 87304 (or 87300 counting only the distinct ones).

The product of its (nonzero) digits is 20736, while the sum is 35.

The square root of 28620296 is about 5349.7940147262. The cubic root of 28620296 is about 305.8849012492.

The spelling of 28620296 in words is "twenty-eight million, six hundred twenty thousand, two hundred ninety-six".