28404249000 has 64 divisors (see below), whose sum is σ = 88621266240. Its totient is φ = 7574465600.

The previous prime is 28404248927. The next prime is 28404249011. The reversal of 28404249000 is 94240482.

It is a super-2 number, since 2×28404249000² (a number of 22 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4731042 + ... + 4737041.

It is an arithmetic number, because the mean of its divisors is an integer number (1384707285).

Almost surely, 2^28404249000 is an apocalyptic number.

28404249000 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

28404249000 is an abundant number, since it is smaller than the sum of its proper divisors (60217017240).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

28404249000 is a wasteful number, since it uses less digits than its factorization.

28404249000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9468107 (or 9468093 counting only the distinct ones).

The product of its (nonzero) digits is 18432, while the sum is 33.

Adding to 28404249000 its reverse (94240482), we get a palindrome (28498489482).

The spelling of 28404249000 in words is "twenty-eight billion, four hundred four million, two hundred forty-nine thousand".