40654288 has 40 divisors (see below), whose sum is σ = 83510280. Its totient is φ = 19138560.

The previous prime is 40654283. The next prime is 40654291. The reversal of 40654288 is 88245604.

It can be written as a sum of positive squares in 4 ways, for example, as 1065024 + 39589264 = 1032^2 + 6292^2 .

It is a super-2 number, since 2×40654288² = 3305542265573888, which contains 22 as substring.

It is a Smith number, since the sum of its digits (37) coincides with the sum of the digits of its prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40654283) 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, 17956 + ... + 20092.

It is an arithmetic number, because the mean of its divisors is an integer number (2087757).

Almost surely, 2^40654288 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 40654288, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (41755140).

40654288 is an abundant number, since it is smaller than the sum of its proper divisors (42855992).

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

40654288 is a wasteful number, since it uses less digits than its factorization.

40654288 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2215 (or 2209 counting only the distinct ones).

The product of its (nonzero) digits is 61440, while the sum is 37.

The square root of 40654288 is about 6376.0715177921. The cubic root of 40654288 is about 343.8498082409.

The spelling of 40654288 in words is "forty million, six hundred fifty-four thousand, two hundred eighty-eight".