28002005499 has 8 divisors (see below), whose sum is σ = 40208007952. Its totient is φ = 17232003360.

The previous prime is 28002005491. The next prime is 28002005509. The reversal of 28002005499 is 99450020082.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 28002005499 - 2³ = 28002005491 is a prime.

It is a super-2 number, since 2×28002005499² (a number of 22 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (39), and also a Moran number because the ratio is a prime number: 718000141 = 28002005499 / (2 + 8 + 0 + 0 + 2 + 0 + 0 + 5 + 4 + 9 + 9).

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (28002005491) 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, 359000032 + ... + 359000109.

It is an arithmetic number, because the mean of its divisors is an integer number (5026000994).

Almost surely, 2^28002005499 is an apocalyptic number.

28002005499 is a deficient number, since it is larger than the sum of its proper divisors (12206002453).

28002005499 is a wasteful number, since it uses less digits than its factorization.

28002005499 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 718000157.

The product of its (nonzero) digits is 51840, while the sum is 39.

The spelling of 28002005499 in words is "twenty-eight billion, two million, five thousand, four hundred ninety-nine".