28092690 has 32 divisors (see below), whose sum is σ = 74914560. Its totient is φ = 7491312.

The previous prime is 28092671. The next prime is 28092709. The reversal of 28092690 is 9629082.

28092690 = 34² + 35² + ... + 438².

It is an interprime number because it is at equal distance from previous prime (28092671) and next prime (28092709).

It is a super-2 number, since 2×28092690² = 1578398462872200, which contains 22 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 51754 + ... + 52293.

It is an arithmetic number, because the mean of its divisors is an integer number (2341080).

Almost surely, 2^28092690 is an apocalyptic number.

28092690 is an abundant number, since it is smaller than the sum of its proper divisors (46821870).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

28092690 is a wasteful number, since it uses less digits than its factorization.

28092690 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 104063 (or 104057 counting only the distinct ones).

The product of its (nonzero) digits is 15552, while the sum is 36.

The square root of 28092690 is about 5300.2537675096. The cubic root of 28092690 is about 303.9936012619.

It can be divided in two parts, 28092 and 690, that added together give a palindrome (28782).

The spelling of 28092690 in words is "twenty-eight million, ninety-two thousand, six hundred ninety".