213154452 has 72 divisors (see below), whose sum is σ = 624268736. Its totient is φ = 60061824.

The previous prime is 213154441. The next prime is 213154457. The reversal of 213154452 is 254451312.

213154452 is a `hidden beast` number, since 213 + 1 + 5 + 445 + 2 = 666.

213154452 is digitally balanced in base 2 and base 3, because in such bases it contains all the possibile digits an equal number of times.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (213154457) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 12603 + ... + 24189.

Almost surely, 2^213154452 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 213154452, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (312134368).

213154452 is an abundant number, since it is smaller than the sum of its proper divisors (411114284).

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

213154452 is a wasteful number, since it uses less digits than its factorization.

213154452 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11677 (or 11672 counting only the distinct ones).

The product of its digits is 4800, while the sum is 27.

The square root of 213154452 is about 14599.8099987637. The cubic root of 213154452 is about 597.3535779117.

The spelling of 213154452 in words is "two hundred thirteen million, one hundred fifty-four thousand, four hundred fifty-two".