404189216730 has 672 divisors, whose sum is σ = 1285754135040. Its totient is φ = 91051983360.

The previous prime is 404189216723. The next prime is 404189216741. The reversal of 404189216730 is 37612981404.

404189216730 is a `hidden beast` number, since 40 + 418 + 9 + 2 + 167 + 30 = 666.

It is a hoax number, since the sum of its digits (45) coincides with the sum of the digits of its distinct prime factors.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is an unprimeable number.

It is a polite number, since it can be written in 335 ways as a sum of consecutive naturals, for example, 725653612 + ... + 725654168.

Almost surely, 2^404189216730 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 404189216730, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (642877067520).

404189216730 is an abundant number, since it is smaller than the sum of its proper divisors (881564918310).

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

404189216730 is a wasteful number, since it uses less digits than its factorization.

404189216730 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 658 (or 630 counting only the distinct ones).

The product of its (nonzero) digits is 290304, while the sum is 45.

The spelling of 404189216730 in words is "four hundred four billion, one hundred eighty-nine million, two hundred sixteen thousand, seven hundred thirty".