28409458990 has 64 divisors (see below), whose sum is σ = 56325196800. Its totient is φ = 10231251840.

The previous prime is 28409458981. The next prime is 28409459003. The reversal of 28409458990 is 9985490482.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 6012769 + ... + 6017491.

It is an arithmetic number, because the mean of its divisors is an integer number (880081200).

Almost surely, 2^28409458990 is an apocalyptic number.

28409458990 is a deficient number, since it is larger than the sum of its proper divisors (27915737810).

28409458990 is a wasteful number, since it uses less digits than its factorization.

28409458990 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5257.

The product of its (nonzero) digits is 7464960, while the sum is 58.

The spelling of 28409458990 in words is "twenty-eight billion, four hundred nine million, four hundred fifty-eight thousand, nine hundred ninety".