28970074 has 24 divisors (see below), whose sum is σ = 53526420. Its totient is φ = 11684736.

The previous prime is 28970021. The next prime is 28970077. The reversal of 28970074 is 47007982.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 27636049 + 1334025 = 5257^2 + 1155^2 .

It is a super-4 number, since 4×28970074⁴ (a number of 31 digits) contains 4444 as substring.

It is not an unprimeable number, because it can be changed into a prime (28970077) 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, 7029 + ... + 10360.

Almost surely, 2^28970074 is an apocalyptic number.

28970074 is a deficient number, since it is larger than the sum of its proper divisors (24556346).

28970074 is a wasteful number, since it uses less digits than its factorization.

28970074 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17422 (or 17415 counting only the distinct ones).

The product of its (nonzero) digits is 28224, while the sum is 37.

The square root of 28970074 is about 5382.3855305989. The cubic root of 28970074 is about 307.1259655600.

The spelling of 28970074 in words is "twenty-eight million, nine hundred seventy thousand, seventy-four".