28419970 has 16 divisors (see below), whose sum is σ = 52404408. Its totient is φ = 11090560.

The previous prime is 28419967. The next prime is 28420027. The reversal of 28419970 is 7991482.

It can be written as a sum of positive squares in 4 ways, for example, as 14722569 + 13697401 = 3837^2 + 3701^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 34249 + ... + 35068.

Almost surely, 2^28419970 is an apocalyptic number.

28419970 is a deficient number, since it is larger than the sum of its proper divisors (23984438).

28419970 is a wasteful number, since it uses less digits than its factorization.

28419970 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 69365.

The product of its (nonzero) digits is 36288, while the sum is 40.

The square root of 28419970 is about 5331.0383603947. The cubic root of 28419970 is about 305.1695554591.

The spelling of 28419970 in words is "twenty-eight million, four hundred nineteen thousand, nine hundred seventy".