28269097 has 4 divisors (see below), whose sum is σ = 28519380. Its totient is φ = 28018816.

The previous prime is 28269091. The next prime is 28269107. The reversal of 28269097 is 79096282.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 15280281 + 12988816 = 3909^2 + 3604^2 .

It is a cyclic number.

It is not a de Polignac number, because 28269097 - 2²³ = 19880489 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (28269091) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 124972 + ... + 125197.

It is an arithmetic number, because the mean of its divisors is an integer number (7129845).

Almost surely, 2^28269097 is an apocalyptic number.

It is an amenable number.

28269097 is a deficient number, since it is larger than the sum of its proper divisors (250283).

28269097 is a wasteful number, since it uses less digits than its factorization.

28269097 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 250282.

The product of its (nonzero) digits is 108864, while the sum is 43.

The square root of 28269097 is about 5316.8690975047. The cubic root of 28269097 is about 304.6285795004.

The spelling of 28269097 in words is "twenty-eight million, two hundred sixty-nine thousand, ninety-seven".