28006090 has 16 divisors (see below), whose sum is σ = 57612672. Its totient is φ = 9602064.

The previous prime is 28006087. The next prime is 28006093. The reversal of 28006090 is 9060082.

It is an interprime number because it is at equal distance from previous prime (28006087) and next prime (28006093).

It is not an unprimeable number, because it can be changed into a prime (28006093) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 199974 + ... + 200113.

It is an arithmetic number, because the mean of its divisors is an integer number (3600792).

Almost surely, 2^28006090 is an apocalyptic number.

28006090 is an abundant number, since it is smaller than the sum of its proper divisors (29606582).

28006090 is a wasteful number, since it uses less digits than its factorization.

28006090 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 400101.

The product of its (nonzero) digits is 864, while the sum is 25.

The square root of 28006090 is about 5292.0780417526. The cubic root of 28006090 is about 303.6809108617.

The spelling of 28006090 in words is "twenty-eight million, six thousand, ninety".