20150064 has 60 divisors (see below), whose sum is σ = 61523592. Its totient is φ = 6105600.

The previous prime is 20150063. The next prime is 20150071. The reversal of 20150064 is 46005102.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is not an unprimeable number, because it can be changed into a prime (20150063) by changing a digit.

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 11 ways as a sum of consecutive naturals, for example, 4777 + ... + 7944.

Almost surely, 2^20150064 is an apocalyptic number.

20150064 is a gapful number since it is divisible by the number (24) formed by its first and last digit.

It is an amenable number.

20150064 is an abundant number, since it is smaller than the sum of its proper divisors (41373528).

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

20150064 is a wasteful number, since it uses less digits than its factorization.

20150064 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12746 (or 12737 counting only the distinct ones).

The product of its (nonzero) digits is 240, while the sum is 18.

The square root of 20150064 is about 4488.8822662217. The cubic root of 20150064 is about 272.1189646851.

Adding to 20150064 its reverse (46005102), we get a palindrome (66155166).

The spelling of 20150064 in words is "twenty million, one hundred fifty thousand, sixty-four".