40652240 has 40 divisors (see below), whose sum is σ = 95824968. Its totient is φ = 16035840.

The previous prime is 40652207. The next prime is 40652273. The reversal of 40652240 is 4225604.

It is an interprime number because it is at equal distance from previous prime (40652207) and next prime (40652273).

It can be written as a sum of positive squares in 4 ways, for example, as 9560464 + 31091776 = 3092^2 + 5576^2 .

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, 2360 + ... + 9320.

Almost surely, 2^40652240 is an apocalyptic number.

40652240 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 40652240, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (47912484).

40652240 is an abundant number, since it is smaller than the sum of its proper divisors (55172728).

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

40652240 is a wasteful number, since it uses less digits than its factorization.

40652240 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7047 (or 7041 counting only the distinct ones).

The product of its (nonzero) digits is 1920, while the sum is 23.

The square root of 40652240 is about 6375.9109153124. The cubic root of 40652240 is about 343.8440342191.

Adding to 40652240 its reverse (4225604), we get a palindrome (44877844).

The spelling of 40652240 in words is "forty million, six hundred fifty-two thousand, two hundred forty".