28900005249 has 8 divisors (see below), whose sum is σ = 38893465440. Its totient is φ = 19086607616.

The previous prime is 28900005247. The next prime is 28900005269. The reversal of 28900005249 is 94250000982.

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

It is a cyclic number.

It is not a de Polignac number, because 28900005249 - 2¹ = 28900005247 is a prime.

It is not an unprimeable number, because it can be changed into a prime (28900005247) 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, 45015264 + ... + 45015905.

It is an arithmetic number, because the mean of its divisors is an integer number (4861683180).

Almost surely, 2^28900005249 is an apocalyptic number.

It is an amenable number.

28900005249 is a deficient number, since it is larger than the sum of its proper divisors (9993460191).

28900005249 is a wasteful number, since it uses less digits than its factorization.

28900005249 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 90031279.

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

The spelling of 28900005249 in words is "twenty-eight billion, nine hundred million, five thousand, two hundred forty-nine".