28770735 has 16 divisors (see below), whose sum is σ = 52609536. Its totient is φ = 13152288.

The previous prime is 28770733. The next prime is 28770737. The reversal of 28770735 is 53707782.

It is an interprime number because it is at equal distance from previous prime (28770733) and next prime (28770737).

It is not a de Polignac number, because 28770735 - 2¹ = 28770733 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 28770693 and 28770702.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28770733) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 136899 + ... + 137108.

It is an arithmetic number, because the mean of its divisors is an integer number (3288096).

Almost surely, 2^28770735 is an apocalyptic number.

28770735 is a deficient number, since it is larger than the sum of its proper divisors (23838801).

28770735 is a wasteful number, since it uses less digits than its factorization.

28770735 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 274022.

The product of its (nonzero) digits is 82320, while the sum is 39.

The square root of 28770735 is about 5363.8358476001. The cubic root of 28770735 is about 306.4199134858.

The spelling of 28770735 in words is "twenty-eight million, seven hundred seventy thousand, seven hundred thirty-five".