20064550 has 36 divisors (see below), whose sum is σ = 40927068. Its totient is φ = 7258000.

The previous prime is 20064523. The next prime is 20064563. The reversal of 20064550 is 5546002.

It is a super-3 number, since 3×20064550³ (a number of 23 digits) contains 333 as substring.

It is a Harshad number since it is a multiple of its sum of digits (22).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 104955 + ... + 105145.

It is an arithmetic number, because the mean of its divisors is an integer number (1136863).

Almost surely, 2^20064550 is an apocalyptic number.

20064550 is an abundant number, since it is smaller than the sum of its proper divisors (20862518).

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

20064550 is a wasteful number, since it uses less digits than its factorization.

20064550 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 405 (or 209 counting only the distinct ones).

The product of its (nonzero) digits is 1200, while the sum is 22.

The square root of 20064550 is about 4479.3470506314. The cubic root of 20064550 is about 271.7334741455.

Multiplying 20064550 by its sum of digits (22), we get a square (441420100 = 21010²).

20064550 divided by its sum of digits (22) gives a square (912025 = 955²).

It can be divided in two parts, 2006 and 4550, that added together give a palindrome (6556).

The spelling of 20064550 in words is "twenty million, sixty-four thousand, five hundred fifty".