40608464 has 40 divisors (see below), whose sum is σ = 85614312. Its totient is φ = 18547200.

The previous prime is 40608443. The next prime is 40608467. The reversal of 40608464 is 46480604.

It can be written as a sum of positive squares in 4 ways, for example, as 12306064 + 28302400 = 3508^2 + 5320^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 40608464.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40608467) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 20042 + ... + 21974.

Almost surely, 2^40608464 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 40608464, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (42807156).

40608464 is an abundant number, since it is smaller than the sum of its proper divisors (45005848).

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

40608464 is a wasteful number, since it uses less digits than its factorization.

40608464 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2055 (or 2049 counting only the distinct ones).

The product of its (nonzero) digits is 18432, while the sum is 32.

The square root of 40608464 is about 6372.4770693977. The cubic root of 40608464 is about 343.7205681027.

The spelling of 40608464 in words is "forty million, six hundred eight thousand, four hundred sixty-four".