64262220 has 48 divisors (see below), whose sum is σ = 196293888. Its totient is φ = 15578560.

The previous prime is 64262213. The next prime is 64262239. The reversal of 64262220 is 2226246.

It is an unprimeable number.

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 15 ways as a sum of consecutive naturals, for example, 48024 + ... + 49343.

It is an arithmetic number, because the mean of its divisors is an integer number (4089456).

Almost surely, 2^64262220 is an apocalyptic number.

64262220 is a gapful number since it is divisible by the number (60) formed by its first and last digit.

It is an amenable number.

64262220 is an abundant number, since it is smaller than the sum of its proper divisors (132031668).

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

64262220 is a wasteful number, since it uses less digits than its factorization.

64262220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 97390 (or 97388 counting only the distinct ones).

The product of its (nonzero) digits is 2304, while the sum is 24.

The square root of 64262220 is about 8016.3719973564. The cubic root of 64262220 is about 400.5455472738.

Adding to 64262220 its reverse (2226246), we get a palindrome (66488466).

It can be divided in two parts, 6426 and 2220, that added together give a triangular number (8646 = T₁₃₁).

The spelling of 64262220 in words is "sixty-four million, two hundred sixty-two thousand, two hundred twenty".