28190570 has 16 divisors (see below), whose sum is σ = 50810760. Its totient is φ = 11261184.

The previous prime is 28190557. The next prime is 28190579. The reversal of 28190570 is 7509182.

It can be written as a sum of positive squares in 4 ways, for example, as 27699169 + 491401 = 5263^2 + 701^2 .

It is not an unprimeable number, because it can be changed into a prime (28190579) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 8966 + ... + 11694.

Almost surely, 2^28190570 is an apocalyptic number.

28190570 is a deficient number, since it is larger than the sum of its proper divisors (22620190).

28190570 is a wasteful number, since it uses less digits than its factorization.

28190570 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3769.

The product of its (nonzero) digits is 5040, while the sum is 32.

The square root of 28190570 is about 5309.4792588351. The cubic root of 28190570 is about 304.3462481995.

The spelling of 28190570 in words is "twenty-eight million, one hundred ninety thousand, five hundred seventy".