28197495 has 12 divisors (see below), whose sum is σ = 48875736. Its totient is φ = 15038640.

The previous prime is 28197487. The next prime is 28197503. The reversal of 28197495 is 59479182.

It is an interprime number because it is at equal distance from previous prime (28197487) and next prime (28197503).

It is not a de Polignac number, because 28197495 - 2³ = 28197487 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (45), and also a Moran number because the ratio is a prime number: 626611 = 28197495 / (2 + 8 + 1 + 9 + 7 + 4 + 9 + 5).

It is a self number, because there is not a number n which added to its sum of digits gives 28197495.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 313261 + ... + 313350.

It is an arithmetic number, because the mean of its divisors is an integer number (4072978).

Almost surely, 2^28197495 is an apocalyptic number.

28197495 is a deficient number, since it is larger than the sum of its proper divisors (20678241).

28197495 is a wasteful number, since it uses less digits than its factorization.

28197495 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 626622 (or 626619 counting only the distinct ones).

The product of its digits is 181440, while the sum is 45.

The square root of 28197495 is about 5310.1313543075. The cubic root of 28197495 is about 304.3711669958.

The spelling of 28197495 in words is "twenty-eight million, one hundred ninety-seven thousand, four hundred ninety-five".