28049699 has 16 divisors (see below), whose sum is σ = 30723840. Its totient is φ = 25536000.

The previous prime is 28049689. The next prime is 28049759. The reversal of 28049699 is 99694082.

It is a cyclic number.

It is not a de Polignac number, because 28049699 - 2⁴ = 28049683 is a prime.

It is a super-2 number, since 2×28049699² = 1573571227981202, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (28049639) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 36479 + ... + 37239.

It is an arithmetic number, because the mean of its divisors is an integer number (1920240).

Almost surely, 2^28049699 is an apocalyptic number.

28049699 is a gapful number since it is divisible by the number (29) formed by its first and last digit.

28049699 is a deficient number, since it is larger than the sum of its proper divisors (2674141).

28049699 is a wasteful number, since it uses less digits than its factorization.

28049699 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 862.

The product of its (nonzero) digits is 279936, while the sum is 47.

The square root of 28049699 is about 5296.1966542038. The cubic root of 28049699 is about 303.8384522274.

The spelling of 28049699 in words is "twenty-eight million, forty-nine thousand, six hundred ninety-nine".