20536450 has 24 divisors (see below), whose sum is σ = 41671440. Its totient is φ = 7467600.

The previous prime is 20536429. The next prime is 20536457. The reversal of 20536450 is 5463502.

It is a super-3 number, since 3×20536450³ (a number of 23 digits) contains 333 as substring.

It is a Harshad number since it is a multiple of its sum of digits (25).

It is not an unprimeable number, because it can be changed into a prime (20536457) 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 11 ways as a sum of consecutive naturals, for example, 18120 + ... + 19219.

It is an arithmetic number, because the mean of its divisors is an integer number (1736310).

Almost surely, 2^20536450 is an apocalyptic number.

20536450 is an abundant number, since it is smaller than the sum of its proper divisors (21134990).

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

20536450 is a wasteful number, since it uses less digits than its factorization.

20536450 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 37362 (or 37357 counting only the distinct ones).

The product of its (nonzero) digits is 3600, while the sum is 25.

The square root of 20536450 is about 4531.7160105196. The cubic root of 20536450 is about 273.8472962323.

Adding to 20536450 its reverse (5463502), we get a palindrome (25999952).

The spelling of 20536450 in words is "twenty million, five hundred thirty-six thousand, four hundred fifty".