205213492 has 24 divisors (see below), whose sum is σ = 395583552. Its totient is φ = 92371200.

The previous prime is 205213453. The next prime is 205213493. The reversal of 205213492 is 294312502.

It is a super-2 number, since 2×205213492² = 84225154597668128, which contains 22 as substring.

It is a hoax number, since the sum of its digits (28) coincides with the sum of the digits of its distinct prime factors.

It is a self number, because there is not a number n which added to its sum of digits gives 205213492.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (205213493) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 18109 + ... + 27172.

It is an arithmetic number, because the mean of its divisors is an integer number (16482648).

Almost surely, 2^205213492 is an apocalyptic number.

205213492 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

It is an amenable number.

205213492 is a deficient number, since it is larger than the sum of its proper divisors (190370060).

205213492 is a wasteful number, since it uses less digits than its factorization.

205213492 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 45399 (or 45397 counting only the distinct ones).

The product of its (nonzero) digits is 4320, while the sum is 28.

The square root of 205213492 is about 14325.2745872461. The cubic root of 205213492 is about 589.8414703830.

Adding to 205213492 its reverse (294312502), we get a palindrome (499525994).

The spelling of 205213492 in words is "two hundred five million, two hundred thirteen thousand, four hundred ninety-two".