28434678000 has 160 divisors (see below), whose sum is σ = 96498704640. Its totient is φ = 7183468800.

The previous prime is 28434677969. The next prime is 28434678037. The reversal of 28434678000 is 87643482.

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, 10714 + ... + 238713.

It is an arithmetic number, because the mean of its divisors is an integer number (603116904).

Almost surely, 2^28434678000 is an apocalyptic number.

28434678000 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 28434678000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (48249352320).

28434678000 is an abundant number, since it is smaller than the sum of its proper divisors (68064026640).

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

28434678000 is a wasteful number, since it uses less digits than its factorization.

28434678000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 249472 (or 249456 counting only the distinct ones).

The product of its (nonzero) digits is 258048, while the sum is 42.

The spelling of 28434678000 in words is "twenty-eight billion, four hundred thirty-four million, six hundred seventy-eight thousand".