20102064 has 20 divisors (see below), whose sum is σ = 51930456. Its totient is φ = 6700672.

The previous prime is 20102029. The next prime is 20102087. The reversal of 20102064 is 46020102.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 209349 + ... + 209444.

Almost surely, 2^20102064 is an apocalyptic number.

20102064 is a gapful number since it is divisible by the number (24) formed by its first and last digit.

It is an amenable number.

20102064 is an abundant number, since it is smaller than the sum of its proper divisors (31828392).

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

20102064 is a wasteful number, since it uses less digits than its factorization.

20102064 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 418804 (or 418798 counting only the distinct ones).

The product of its (nonzero) digits is 96, while the sum is 15.

The square root of 20102064 is about 4483.5325358472. The cubic root of 20102064 is about 271.9027189601.

Adding to 20102064 its reverse (46020102), we get a palindrome (66122166).

It can be divided in two parts, 2010 and 2064, that multiplied together give a triangular number (4148640 = T₂₈₈₀).

The spelling of 20102064 in words is "twenty million, one hundred two thousand, sixty-four".