20826430 has 16 divisors (see below), whose sum is σ = 38016864. Its totient is φ = 8212960.

The previous prime is 20826427. The next prime is 20826439. The reversal of 20826430 is 3462802.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 20826395 and 20826404.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20826439) 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, 13957 + ... + 15376.

It is an arithmetic number, because the mean of its divisors is an integer number (2376054).

Almost surely, 2^20826430 is an apocalyptic number.

20826430 is a deficient number, since it is larger than the sum of its proper divisors (17190434).

20826430 is a wasteful number, since it uses less digits than its factorization.

20826430 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 29411.

The product of its (nonzero) digits is 2304, while the sum is 25.

The square root of 20826430 is about 4563.5983609428. The cubic root of 20826430 is about 275.1302083111.

The spelling of 20826430 in words is "twenty million, eight hundred twenty-six thousand, four hundred thirty".