28970842 has 8 divisors (see below), whose sum is σ = 43773876. Its totient is φ = 14379552.

The previous prime is 28970803. The next prime is 28970881. The reversal of 28970842 is 24807982.

It is an interprime number because it is at equal distance from previous prime (28970803) and next prime (28970881).

It can be written as a sum of positive squares in 2 ways, for example, as 28847641 + 123201 = 5371^2 + 351^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a junction number, because it is equal to n+sod(n) for n = 28970795 and 28970804.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 52593 + ... + 53140.

Almost surely, 2^28970842 is an apocalyptic number.

28970842 is a deficient number, since it is larger than the sum of its proper divisors (14803034).

28970842 is a wasteful number, since it uses less digits than its factorization.

28970842 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 105872.

The product of its (nonzero) digits is 64512, while the sum is 40.

The square root of 28970842 is about 5382.4568739564. The cubic root of 28970842 is about 307.1286795176.

The spelling of 28970842 in words is "twenty-eight million, nine hundred seventy thousand, eight hundred forty-two".