28097626 has 4 divisors (see below), whose sum is σ = 42146442. Its totient is φ = 14048812.

The previous prime is 28097621. The next prime is 28097633. The reversal of 28097626 is 62679082.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 62679082 = 2 ⋅31339541.

It can be written as a sum of positive squares in only one way, i.e., 28079401 + 18225 = 5299^2 + 135^2 .

It is not an unprimeable number, because it can be changed into a prime (28097621) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 7024405 + ... + 7024408.

Almost surely, 2^28097626 is an apocalyptic number.

28097626 is a deficient number, since it is larger than the sum of its proper divisors (14048816).

28097626 is a wasteful number, since it uses less digits than its factorization.

28097626 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14048815.

The product of its (nonzero) digits is 72576, while the sum is 40.

The square root of 28097626 is about 5300.7193851401. The cubic root of 28097626 is about 304.0114045237.

The spelling of 28097626 in words is "twenty-eight million, ninety-seven thousand, six hundred twenty-six".