28733434 has 24 divisors (see below), whose sum is σ = 48184308. Its totient is φ = 12804480.

The previous prime is 28733429. The next prime is 28733443. The reversal of 28733434 is 43433782.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 27300625 + 1432809 = 5225^2 + 1197^2 .

It is a super-2 number, since 2×28733434² = 1651220458864712, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (34).

It is a self number, because there is not a number n which added to its sum of digits gives 28733434.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 11104 + ... + 13444.

Almost surely, 2^28733434 is an apocalyptic number.

28733434 is a deficient number, since it is larger than the sum of its proper divisors (19450874).

28733434 is a wasteful number, since it uses less digits than its factorization.

28733434 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2398 (or 2379 counting only the distinct ones).

The product of its digits is 48384, while the sum is 34.

The square root of 28733434 is about 5360.3576373223. The cubic root of 28733434 is about 306.2874326589.

The spelling of 28733434 in words is "twenty-eight million, seven hundred thirty-three thousand, four hundred thirty-four".