28774790 has 32 divisors (see below), whose sum is σ = 56733696. Its totient is φ = 10420960.

The previous prime is 28774777. The next prime is 28774793. The reversal of 28774790 is 9747782.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28774793) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 41789 + ... + 42471.

It is an arithmetic number, because the mean of its divisors is an integer number (1772928).

Almost surely, 2^28774790 is an apocalyptic number.

28774790 is a deficient number, since it is larger than the sum of its proper divisors (27958906).

28774790 is a wasteful number, since it uses less digits than its factorization.

28774790 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1084.

The product of its (nonzero) digits is 197568, while the sum is 44.

The square root of 28774790 is about 5364.2138286985. The cubic root of 28774790 is about 306.4343086038.

It can be divided in two parts, 2877 and 4790, that added together give a palindrome (7667).

The spelling of 28774790 in words is "twenty-eight million, seven hundred seventy-four thousand, seven hundred ninety".