28426785 has 8 divisors (see below), whose sum is σ = 45482880. Its totient is φ = 15160944.

The previous prime is 28426747. The next prime is 28426787. The reversal of 28426785 is 58762482.

It is a happy number.

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

It is a de Polignac number, because none of the positive numbers 2^k-28426785 is a prime.

It is a Smith number, since the sum of its digits (42) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is not an unprimeable number, because it can be changed into a prime (28426787) 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, 947545 + ... + 947574.

It is an arithmetic number, because the mean of its divisors is an integer number (5685360).

Almost surely, 2^28426785 is an apocalyptic number.

It is an amenable number.

28426785 is a deficient number, since it is larger than the sum of its proper divisors (17056095).

28426785 is a wasteful number, since it uses less digits than its factorization.

28426785 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1895127.

The product of its digits is 215040, while the sum is 42.

The square root of 28426785 is about 5331.6775033755. The cubic root of 28426785 is about 305.1939463399.

The spelling of 28426785 in words is "twenty-eight million, four hundred twenty-six thousand, seven hundred eighty-five".