78898000 has 80 divisors (see below), whose sum is σ = 193130496. Its totient is φ = 31171200.

The previous prime is 78897983. The next prime is 78898019. The reversal of 78898000 is 89887.

It is a tau number, because it is divible by the number of its divisors (80).

It is a Harshad number since it is a multiple of its sum of digits (40).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 205809 + ... + 206191.

Almost surely, 2^78898000 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 78898000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (96565248).

78898000 is an abundant number, since it is smaller than the sum of its proper divisors (114232496).

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

78898000 is a wasteful number, since it uses less digits than its factorization.

78898000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 509 (or 493 counting only the distinct ones).

The product of its (nonzero) digits is 32256, while the sum is 40.

The square root of 78898000 is about 8882.4546157017. The cubic root of 78898000 is about 428.8992940861.

The spelling of 78898000 in words is "seventy-eight million, eight hundred ninety-eight thousand".