20253829 has 8 divisors (see below), whose sum is σ = 21476000. Its totient is φ = 19047312.

The previous prime is 20253811. The next prime is 20253839. The reversal of 20253829 is 92835202.

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 20253829 - 2¹³ = 20245637 is a prime.

It is a super-2 number, since 2×20253829² = 820435178322482, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 20253829.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20253839) 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, 1194 + ... + 6475.

It is an arithmetic number, because the mean of its divisors is an integer number (2684500).

Almost surely, 2^20253829 is an apocalyptic number.

It is an amenable number.

20253829 is a deficient number, since it is larger than the sum of its proper divisors (1222171).

20253829 is a wasteful number, since it uses less digits than its factorization.

20253829 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7827.

The product of its (nonzero) digits is 8640, while the sum is 31.

The square root of 20253829 is about 4500.4254243349. The cubic root of 20253829 is about 272.5852674835.

The spelling of 20253829 in words is "twenty million, two hundred fifty-three thousand, eight hundred twenty-nine".