20534929 has 16 divisors (see below), whose sum is σ = 23483520. Its totient is φ = 17839360.

The previous prime is 20534893. The next prime is 20534933. The reversal of 20534929 is 92943502.

It is a cyclic number.

It is not a de Polignac number, because 20534929 - 2¹⁷ = 20403857 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 20534894 and 20534903.

It is not an unprimeable number, because it can be changed into a prime (20534939) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 10434 + ... + 12244.

It is an arithmetic number, because the mean of its divisors is an integer number (1467720).

Almost surely, 2^20534929 is an apocalyptic number.

20534929 is a gapful number since it is divisible by the number (29) formed by its first and last digit.

It is an amenable number.

20534929 is a deficient number, since it is larger than the sum of its proper divisors (2948591).

20534929 is a wasteful number, since it uses less digits than its factorization.

20534929 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1880.

The product of its (nonzero) digits is 19440, while the sum is 34.

The square root of 20534929 is about 4531.5481901884. The cubic root of 20534929 is about 273.8405353750.

The spelling of 20534929 in words is "twenty million, five hundred thirty-four thousand, nine hundred twenty-nine".