28263045 has 32 divisors (see below), whose sum is σ = 46801152. Its totient is φ = 14556672.

The previous prime is 28263043. The next prime is 28263049. The reversal of 28263045 is 54036282.

It is not a de Polignac number, because 28263045 - 2¹ = 28263043 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28263043) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 57792 + ... + 58278.

It is an arithmetic number, because the mean of its divisors is an integer number (1462536).

Almost surely, 2^28263045 is an apocalyptic number.

It is an amenable number.

28263045 is a deficient number, since it is larger than the sum of its proper divisors (18538107).

28263045 is a wasteful number, since it uses less digits than its factorization.

28263045 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 621.

The product of its (nonzero) digits is 11520, while the sum is 30.

The square root of 28263045 is about 5316.2999351052. The cubic root of 28263045 is about 304.6068391085.

The spelling of 28263045 in words is "twenty-eight million, two hundred sixty-three thousand, forty-five".