28745541 has 12 divisors (see below), whose sum is σ = 45296160. Its totient is φ = 17421480.

The previous prime is 28745533. The next prime is 28745569. The reversal of 28745541 is 14554782.

It is not a de Polignac number, because 28745541 - 2³ = 28745533 is a prime.

It is a super-2 number, since 2×28745541² = 1652612254765362, which contains 22 as substring.

It is a Smith number, since the sum of its digits (36) coincides with the sum of the digits of its prime factors.

It is a junction number, because it is equal to n+sod(n) for n = 28745496 and 28745505.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28745501) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 145081 + ... + 145278.

It is an arithmetic number, because the mean of its divisors is an integer number (3774680).

Almost surely, 2^28745541 is an apocalyptic number.

It is an amenable number.

28745541 is a deficient number, since it is larger than the sum of its proper divisors (16550619).

28745541 is a wasteful number, since it uses less digits than its factorization.

28745541 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 290376 (or 290373 counting only the distinct ones).

The product of its digits is 44800, while the sum is 36.

The square root of 28745541 is about 5361.4868273642. The cubic root of 28745541 is about 306.3304452837.

It can be divided in two parts, 287455 and 41, that added together give a cube (287496 = 66³).

The spelling of 28745541 in words is "twenty-eight million, seven hundred forty-five thousand, five hundred forty-one".