28749435 has 48 divisors (see below), whose sum is σ = 54390528. Its totient is φ = 12854400.

The previous prime is 28749421. The next prime is 28749449. The reversal of 28749435 is 53494782.

It is an interprime number because it is at equal distance from previous prime (28749421) and next prime (28749449).

It is not a de Polignac number, because 28749435 - 2⁴ = 28749419 is a prime.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 27370 + ... + 28400.

It is an arithmetic number, because the mean of its divisors is an integer number (1133136).

Almost surely, 2^28749435 is an apocalyptic number.

28749435 is a deficient number, since it is larger than the sum of its proper divisors (25641093).

28749435 is a wasteful number, since it uses less digits than its factorization.

28749435 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1076 (or 1063 counting only the distinct ones).

The product of its digits is 241920, while the sum is 42.

The square root of 28749435 is about 5361.8499606013. The cubic root of 28749435 is about 306.3442769581.

The spelling of 28749435 in words is "twenty-eight million, seven hundred forty-nine thousand, four hundred thirty-five".