28062797 has 4 divisors (see below), whose sum is σ = 32071776. Its totient is φ = 24053820.

The previous prime is 28062743. The next prime is 28062817. The reversal of 28062797 is 79726082.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 79726082 = 2 ⋅39863041.

It is a de Polignac number, because none of the positive numbers 2^k-28062797 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28062707) 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, 2004479 + ... + 2004492.

It is an arithmetic number, because the mean of its divisors is an integer number (8017944).

Almost surely, 2^28062797 is an apocalyptic number.

It is an amenable number.

28062797 is a deficient number, since it is larger than the sum of its proper divisors (4008979).

28062797 is an equidigital number, since it uses as much as digits as its factorization.

28062797 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4008978.

The product of its (nonzero) digits is 84672, while the sum is 41.

The square root of 28062797 is about 5297.4330576233. The cubic root of 28062797 is about 303.8857380201.

The spelling of 28062797 in words is "twenty-eight million, sixty-two thousand, seven hundred ninety-seven".