213432450 has 192 divisors, whose sum is σ = 699383808. Its totient is φ = 41702400.

The previous prime is 213432449. The next prime is 213432451. The reversal of 213432450 is 54234312.

It is an interprime number because it is at equal distance from previous prime (213432449) and next prime (213432451).

It is a self number, because there is not a number n which added to its sum of digits gives 213432450.

It is not an unprimeable number, because it can be changed into a prime (213432451) by changing a digit.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 195807 + ... + 196893.

It is an arithmetic number, because the mean of its divisors is an integer number (3642624).

Almost surely, 2^213432450 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 213432450, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (349691904).

213432450 is an abundant number, since it is smaller than the sum of its proper divisors (485951358).

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

213432450 is a wasteful number, since it uses less digits than its factorization.

213432450 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1137 (or 1132 counting only the distinct ones).

The product of its (nonzero) digits is 2880, while the sum is 24.

The square root of 213432450 is about 14609.3274999228. The cubic root of 213432450 is about 597.6131564426.

Adding to 213432450 its reverse (54234312), we get a palindrome (267666762).

The spelling of 213432450 in words is "two hundred thirteen million, four hundred thirty-two thousand, four hundred fifty".