64027140 has 48 divisors (see below), whose sum is σ = 179843328. Its totient is φ = 17019904.

The previous prime is 64027133. The next prime is 64027141. The reversal of 64027140 is 4172046.

It is a self number, because there is not a number n which added to its sum of digits gives 64027140.

It is not an unprimeable number, because it can be changed into a prime (64027141) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 19669 + ... + 22691.

It is an arithmetic number, because the mean of its divisors is an integer number (3746736).

Almost surely, 2^64027140 is an apocalyptic number.

64027140 is a gapful number since it is divisible by the number (60) formed by its first and last digit.

It is an amenable number.

64027140 is an abundant number, since it is smaller than the sum of its proper divisors (115816188).

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

64027140 is a wasteful number, since it uses less digits than its factorization.

64027140 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3388 (or 3386 counting only the distinct ones).

The product of its (nonzero) digits is 1344, while the sum is 24.

The square root of 64027140 is about 8001.6960702091. The cubic root of 64027140 is about 400.0565336761.

Adding to 64027140 its reverse (4172046), we get a palindrome (68199186).

The spelling of 64027140 in words is "sixty-four million, twenty-seven thousand, one hundred forty".