28264743 has 18 divisors (see below), whose sum is σ = 44211336. Its totient is φ = 17392752.

The previous prime is 28264697. The next prime is 28264751. The reversal of 28264743 is 34746282.

28264743 is a `hidden beast` number, since 2 + 8 + 2 + 647 + 4 + 3 = 666.

It is not a de Polignac number, because 28264743 - 2⁶ = 28264679 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 28264698 and 28264707.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28264793) by changing a digit.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 7771 + ... + 10812.

Almost surely, 2^28264743 is an apocalyptic number.

28264743 is a deficient number, since it is larger than the sum of its proper divisors (15946593).

28264743 is a wasteful number, since it uses less digits than its factorization.

28264743 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18615 (or 18599 counting only the distinct ones).

The product of its digits is 64512, while the sum is 36.

The square root of 28264743 is about 5316.4596302427. The cubic root of 28264743 is about 304.6129390888.

It can be divided in two parts, 2826 and 4743, that added together give a square (7569 = 87²).

The spelling of 28264743 in words is "twenty-eight million, two hundred sixty-four thousand, seven hundred forty-three".