28307426 has 8 divisors (see below), whose sum is σ = 48527040. Its totient is φ = 12131748.

The previous prime is 28307381. The next prime is 28307441. The reversal of 28307426 is 62470382.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 28307392 and 28307401.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1010966 + ... + 1010993.

It is an arithmetic number, because the mean of its divisors is an integer number (6065880).

Almost surely, 2^28307426 is an apocalyptic number.

28307426 is a deficient number, since it is larger than the sum of its proper divisors (20219614).

28307426 is a wasteful number, since it uses less digits than its factorization.

28307426 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2021968.

The product of its (nonzero) digits is 16128, while the sum is 32.

The square root of 28307426 is about 5320.4723474519. The cubic root of 28307426 is about 304.7661954482.

The spelling of 28307426 in words is "twenty-eight million, three hundred seven thousand, four hundred twenty-six".