64091120 has 40 divisors (see below), whose sum is σ = 150912960. Its totient is φ = 25309440.

The previous prime is 64091119. The next prime is 64091143. The reversal of 64091120 is 2119046.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (40).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1250 + ... + 11390.

It is an arithmetic number, because the mean of its divisors is an integer number (3772824).

Almost surely, 2^64091120 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 64091120, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (75456480).

64091120 is an abundant number, since it is smaller than the sum of its proper divisors (86821840).

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

64091120 is a wasteful number, since it uses less digits than its factorization.

64091120 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10233 (or 10227 counting only the distinct ones).

The product of its (nonzero) digits is 432, while the sum is 23.

The square root of 64091120 is about 8005.6929743777. The cubic root of 64091120 is about 400.1897433128.

The spelling of 64091120 in words is "sixty-four million, ninety-one thousand, one hundred twenty".