213402452 has 12 divisors (see below), whose sum is σ = 393109920. Its totient is φ = 101085336.

The previous prime is 213402373. The next prime is 213402457. The reversal of 213402452 is 254204312.

It is a happy number.

It is a super-2 number, since 2×213402452² = 91081213039224608, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (213402457) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1403888 + ... + 1404039.

It is an arithmetic number, because the mean of its divisors is an integer number (32759160).

Almost surely, 2^213402452 is an apocalyptic number.

It is an amenable number.

213402452 is a deficient number, since it is larger than the sum of its proper divisors (179707468).

213402452 is a wasteful number, since it uses less digits than its factorization.

213402452 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2807950 (or 2807948 counting only the distinct ones).

The product of its (nonzero) digits is 1920, while the sum is 23.

The square root of 213402452 is about 14608.3007909887. The cubic root of 213402452 is about 597.5851568898.

Adding to 213402452 its reverse (254204312), we get a palindrome (467606764).

The spelling of 213402452 in words is "two hundred thirteen million, four hundred two thousand, four hundred fifty-two".