78898204728 has 192 divisors, whose sum is σ = 245802885120. Its totient is φ = 22395744000.

The previous prime is 78898204711. The next prime is 78898204733. The reversal of 78898204728 is 82740289887.

78898204728 is a `hidden beast` number, since 7 + 8 + 89 + 82 + 0 + 472 + 8 = 666.

It is a Harshad number since it is a multiple of its sum of digits (63).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 68546953 + ... + 68548103.

It is an arithmetic number, because the mean of its divisors is an integer number (1280223360).

Almost surely, 2^78898204728 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 78898204728, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (122901442560).

78898204728 is an abundant number, since it is smaller than the sum of its proper divisors (166904680392).

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

78898204728 is a wasteful number, since it uses less digits than its factorization.

78898204728 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1938 (or 1931 counting only the distinct ones).

The product of its (nonzero) digits is 28901376, while the sum is 63.

The spelling of 78898204728 in words is "seventy-eight billion, eight hundred ninety-eight million, two hundred four thousand, seven hundred twenty-eight".