20499234 has 32 divisors (see below), whose sum is σ = 47744640. Its totient is φ = 5745792.

The previous prime is 20499211. The next prime is 20499239. The reversal of 20499234 is 43299402.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 20499195 and 20499204.

It is not an unprimeable number, because it can be changed into a prime (20499239) 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 15 ways as a sum of consecutive naturals, for example, 2379 + ... + 6830.

It is an arithmetic number, because the mean of its divisors is an integer number (1492020).

Almost surely, 2^20499234 is an apocalyptic number.

20499234 is an abundant number, since it is smaller than the sum of its proper divisors (27245406).

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

20499234 is a wasteful number, since it uses less digits than its factorization.

20499234 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9274.

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

The square root of 20499234 is about 4527.6079777295. The cubic root of 20499234 is about 273.6817748706.

The spelling of 20499234 in words is "twenty million, four hundred ninety-nine thousand, two hundred thirty-four".