28004692 has 12 divisors (see below), whose sum is σ = 49050036. Its totient is φ = 13990400.

The previous prime is 28004663. The next prime is 28004693. The reversal of 28004692 is 29640082.

It can be written as a sum of positive squares in 2 ways, for example, as 24147396 + 3857296 = 4914^2 + 1964^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28004693) 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, 4218 + ... + 8590.

It is an arithmetic number, because the mean of its divisors is an integer number (4087503).

Almost surely, 2^28004692 is an apocalyptic number.

It is an amenable number.

28004692 is a deficient number, since it is larger than the sum of its proper divisors (21045344).

28004692 is a wasteful number, since it uses less digits than its factorization.

28004692 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5978 (or 5976 counting only the distinct ones).

The product of its (nonzero) digits is 6912, while the sum is 31.

The square root of 28004692 is about 5291.9459558843. The cubic root of 28004692 is about 303.6758577586.

The spelling of 28004692 in words is "twenty-eight million, four thousand, six hundred ninety-two".