28692025 has 12 divisors (see below), whose sum is σ = 35708652. Its totient is φ = 22869440.

The previous prime is 28692007. The next prime is 28692029. The reversal of 28692025 is 52029682.

It can be written as a sum of positive squares in 6 ways, for example, as 2518569 + 26173456 = 1587^2 + 5116^2 .

It is not a de Polignac number, because 28692025 - 2¹³ = 28683833 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (28692029) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 5367 + ... + 9283.

It is an arithmetic number, because the mean of its divisors is an integer number (2975721).

Almost surely, 2^28692025 is an apocalyptic number.

28692025 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

28692025 is a deficient number, since it is larger than the sum of its proper divisors (7016627).

28692025 is a wasteful number, since it uses less digits than its factorization.

28692025 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4220 (or 4215 counting only the distinct ones).

The product of its (nonzero) digits is 17280, while the sum is 34.

The square root of 28692025 is about 5356.4937225764. The cubic root of 28692025 is about 306.1402272132.

The spelling of 28692025 in words is "twenty-eight million, six hundred ninety-two thousand, twenty-five".