20434492 has 24 divisors (see below), whose sum is σ = 38771936. Its totient is φ = 9367488.

The previous prime is 20434457. The next prime is 20434499. The reversal of 20434492 is 29443402.

It is a self number, because there is not a number n which added to its sum of digits gives 20434492.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20434499) 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, 6913 + ... + 9415.

Almost surely, 2^20434492 is an apocalyptic number.

It is an amenable number.

20434492 is a deficient number, since it is larger than the sum of its proper divisors (18337444).

20434492 is a wasteful number, since it uses less digits than its factorization.

20434492 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2677 (or 2675 counting only the distinct ones).

The product of its (nonzero) digits is 6912, while the sum is 28.

The square root of 20434492 is about 4520.4526322040. The cubic root of 20434492 is about 273.3933512199.

Adding to 20434492 its reverse (29443402), we get a palindrome (49877894).

The spelling of 20434492 in words is "twenty million, four hundred thirty-four thousand, four hundred ninety-two".