28273970 has 8 divisors (see below), whose sum is σ = 50893164. Its totient is φ = 11309584.

The previous prime is 28273967. The next prime is 28273997. The reversal of 28273970 is 7937282.

It can be written as a sum of positive squares in 2 ways, for example, as 28270489 + 3481 = 5317^2 + 59^2 .

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

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, 1413689 + ... + 1413708.

Almost surely, 2^28273970 is an apocalyptic number.

28273970 is a deficient number, since it is larger than the sum of its proper divisors (22619194).

28273970 is a wasteful number, since it uses less digits than its factorization.

28273970 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2827404.

The product of its (nonzero) digits is 42336, while the sum is 38.

The square root of 28273970 is about 5317.3273361718. The cubic root of 28273970 is about 304.6460823561.

The spelling of 28273970 in words is "twenty-eight million, two hundred seventy-three thousand, nine hundred seventy".