28750026 has 32 divisors (see below), whose sum is σ = 61585920. Its totient is φ = 8915456.

The previous prime is 28750019. The next prime is 28750031. The reversal of 28750026 is 62005782.

It is a junction number, because it is equal to n+sod(n) for n = 28749975 and 28750002.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 7495 + ... + 10661.

It is an arithmetic number, because the mean of its divisors is an integer number (1924560).

Almost surely, 2^28750026 is an apocalyptic number.

28750026 is an abundant number, since it is smaller than the sum of its proper divisors (32835894).

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

28750026 is a wasteful number, since it uses less digits than its factorization.

28750026 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3278.

The product of its (nonzero) digits is 6720, while the sum is 30.

The square root of 28750026 is about 5361.9050718938. The cubic root of 28750026 is about 306.3463761093.

The spelling of 28750026 in words is "twenty-eight million, seven hundred fifty thousand, twenty-six".