213273456 has 80 divisors (see below), whose sum is σ = 608770560. Its totient is φ = 63797760.

The previous prime is 213273413. The next prime is 213273469. The reversal of 213273456 is 654372312.

213273456 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a hoax number, since the sum of its digits (33) 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 (33).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 39156 + ... + 44268.

It is an arithmetic number, because the mean of its divisors is an integer number (7609632).

Almost surely, 2^213273456 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 213273456, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (304385280).

213273456 is an abundant number, since it is smaller than the sum of its proper divisors (395497104).

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

213273456 is a wasteful number, since it uses less digits than its factorization.

213273456 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5214 (or 5208 counting only the distinct ones).

The product of its digits is 30240, while the sum is 33.

The square root of 213273456 is about 14603.8849625707. The cubic root of 213273456 is about 597.4647246087.

The spelling of 213273456 in words is "two hundred thirteen million, two hundred seventy-three thousand, four hundred fifty-six".