20492064 has 36 divisors (see below), whose sum is σ = 58275126. Its totient is φ = 6830592.

The previous prime is 20492063. The next prime is 20492071. The reversal of 20492064 is 46029402.

It can be written as a sum of positive squares in only one way, i.e., 20250000 + 242064 = 4500^2 + 492^2 .

It is a tau number, because it is divible by the number of its divisors (36).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20492063) 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 5 ways as a sum of consecutive naturals, for example, 35289 + ... + 35864.

Almost surely, 2^20492064 is an apocalyptic number.

20492064 is a gapful number since it is divisible by the number (24) formed by its first and last digit.

It is an amenable number.

20492064 is an abundant number, since it is smaller than the sum of its proper divisors (37783062).

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

20492064 is a wasteful number, since it uses less digits than its factorization.

20492064 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 71169 (or 71158 counting only the distinct ones).

The product of its (nonzero) digits is 3456, while the sum is 27.

The square root of 20492064 is about 4526.8160996444. The cubic root of 20492064 is about 273.6498626676.

The spelling of 20492064 in words is "twenty million, four hundred ninety-two thousand, sixty-four".