28394734704 has 160 divisors (see below), whose sum is σ = 91627278336. Its totient is φ = 7389204480.

The previous prime is 28394734703. The next prime is 28394734717. The reversal of 28394734704 is 40743749382.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (51).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28394734703) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 96894 + ... + 257250.

Almost surely, 2^28394734704 is an apocalyptic number.

28394734704 is a gapful number since it is divisible by the number (24) 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 28394734704, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (45813639168).

28394734704 is an abundant number, since it is smaller than the sum of its proper divisors (63232543632).

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

28394734704 is a wasteful number, since it uses less digits than its factorization.

28394734704 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 160423 (or 160417 counting only the distinct ones).

The product of its (nonzero) digits is 4064256, while the sum is 51.

The spelling of 28394734704 in words is "twenty-eight billion, three hundred ninety-four million, seven hundred thirty-four thousand, seven hundred four".