21829273470 has 128 divisors (see below), whose sum is σ = 64879833600. Its totient is φ = 5190345216.

The previous prime is 21829273447. The next prime is 21829273493. The reversal of 21829273470 is 7437292812.

21829273470 is a `hidden beast` number, since 2 + 18 + 292 + 7 + 347 + 0 = 666.

It is an interprime number because it is at equal distance from previous prime (21829273447) and next prime (21829273493).

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 a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 37944 + ... + 212363.

It is an arithmetic number, because the mean of its divisors is an integer number (506873700).

Almost surely, 2^21829273470 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 21829273470, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (32439916800).

21829273470 is an abundant number, since it is smaller than the sum of its proper divisors (43050560130).

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

21829273470 is a wasteful number, since it uses less digits than its factorization.

21829273470 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 250359 (or 250353 counting only the distinct ones).

The product of its (nonzero) digits is 338688, while the sum is 45.

The spelling of 21829273470 in words is "twenty-one billion, eight hundred twenty-nine million, two hundred seventy-three thousand, four hundred seventy".