20053494 has 20 divisors (see below), whose sum is σ = 44935044. Its totient is φ = 6684444.

The previous prime is 20053483. The next prime is 20053513. The reversal of 20053494 is 49435002.

It is a super-3 number, since 3×20053494³ (a number of 23 digits) contains 333 as substring.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 61732 + ... + 62055.

Almost surely, 2^20053494 is an apocalyptic number.

20053494 is an abundant number, since it is smaller than the sum of its proper divisors (24881550).

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

20053494 is a wasteful number, since it uses less digits than its factorization.

20053494 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 123801 (or 123792 counting only the distinct ones).

The product of its (nonzero) digits is 4320, while the sum is 27.

The square root of 20053494 is about 4478.1127721396. The cubic root of 20053494 is about 271.6835546395.

Adding to 20053494 its reverse (49435002), we get a palindrome (69488496).

The spelling of 20053494 in words is "twenty million, fifty-three thousand, four hundred ninety-four".