20434992 has 40 divisors (see below), whose sum is σ = 53007024. Its totient is φ = 6783744.

The previous prime is 20434991. The next prime is 20435021. The reversal of 20434992 is 29943402.

It is not an unprimeable number, because it can be changed into a prime (20434991) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 13338 + ... + 14790.

Almost surely, 2^20434992 is an apocalyptic number.

It is an amenable number.

20434992 is an abundant number, since it is smaller than the sum of its proper divisors (32572032).

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

20434992 is a wasteful number, since it uses less digits than its factorization.

20434992 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1757 (or 1751 counting only the distinct ones).

The product of its (nonzero) digits is 15552, while the sum is 33.

The square root of 20434992 is about 4520.5079360621. The cubic root of 20434992 is about 273.3955810374.

The spelling of 20434992 in words is "twenty million, four hundred thirty-four thousand, nine hundred ninety-two".