215044830 has 432 divisors, whose sum is σ = 794731392. Its totient is φ = 39916800.

The previous prime is 215044811. The next prime is 215044847. The reversal of 215044830 is 38440512.

215044830 is a `hidden beast` number, since 215 + 0 + 448 + 3 + 0 = 666.

It is a hoax number, since the sum of its digits (27) coincides with the sum of the digits of its distinct prime factors.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 215044794 and 215044803.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 215 ways as a sum of consecutive naturals, for example, 6936915 + ... + 6936945.

It is an arithmetic number, because the mean of its divisors is an integer number (1839656).

Almost surely, 2^215044830 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 215044830, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (397365696).

215044830 is an abundant number, since it is smaller than the sum of its proper divisors (579686562).

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

215044830 is a wasteful number, since it uses less digits than its factorization.

215044830 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 93 (or 72 counting only the distinct ones).

The product of its (nonzero) digits is 3840, while the sum is 27.

The square root of 215044830 is about 14664.4069092480. The cubic root of 215044830 is about 599.1142764664.

The spelling of 215044830 in words is "two hundred fifteen million, forty-four thousand, eight hundred thirty".