20403452 has 12 divisors (see below), whose sum is σ = 36466080. Its totient is φ = 9984576.

The previous prime is 20403431. The next prime is 20403469. The reversal of 20403452 is 25430402.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 54077 + ... + 54452.

It is an arithmetic number, because the mean of its divisors is an integer number (3038840).

Almost surely, 2^20403452 is an apocalyptic number.

It is an amenable number.

20403452 is a deficient number, since it is larger than the sum of its proper divisors (16062628).

20403452 is a wasteful number, since it uses less digits than its factorization.

20403452 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 108580 (or 108578 counting only the distinct ones).

The product of its (nonzero) digits is 960, while the sum is 20.

The square root of 20403452 is about 4517.0180429128. The cubic root of 20403452 is about 273.2548528734.

Adding to 20403452 its reverse (25430402), we get a palindrome (45833854).

The spelling of 20403452 in words is "twenty million, four hundred three thousand, four hundred fifty-two".