20874529 has 8 divisors (see below), whose sum is σ = 22522752. Its totient is φ = 19232400.

The previous prime is 20874509. The next prime is 20874571. The reversal of 20874529 is 92547802.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 20874529 - 2¹³ = 20866337 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20874509) 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, 7704 + ... + 10054.

It is an arithmetic number, because the mean of its divisors is an integer number (2815344).

Almost surely, 2^20874529 is an apocalyptic number.

It is an amenable number.

20874529 is a deficient number, since it is larger than the sum of its proper divisors (1648223).

20874529 is a wasteful number, since it uses less digits than its factorization.

20874529 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3047.

The product of its (nonzero) digits is 40320, while the sum is 37.

The square root of 20874529 is about 4568.8651763868. The cubic root of 20874529 is about 275.3418514537.

The spelling of 20874529 in words is "twenty million, eight hundred seventy-four thousand, five hundred twenty-nine".