28845069 has 24 divisors (see below), whose sum is σ = 42581280. Its totient is φ = 17355360.

The previous prime is 28845031. The next prime is 28845071. The reversal of 28845069 is 96054882.

28845069 = 427² + 428² + ... + 547².

It is not a de Polignac number, because 28845069 - 2¹³ = 28836877 is a prime.

It is a super-2 number, since 2×28845069² = 1664076011229522, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 28845069.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28845029) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 82954 + ... + 83300.

It is an arithmetic number, because the mean of its divisors is an integer number (1774220).

Almost surely, 2^28845069 is an apocalyptic number.

It is an amenable number.

28845069 is a deficient number, since it is larger than the sum of its proper divisors (13736211).

28845069 is a wasteful number, since it uses less digits than its factorization.

28845069 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 601 (or 590 counting only the distinct ones).

The product of its (nonzero) digits is 138240, while the sum is 42.

The square root of 28845069 is about 5370.7605606655. The cubic root of 28845069 is about 306.6835822165.

The spelling of 28845069 in words is "twenty-eight million, eight hundred forty-five thousand, sixty-nine".