40617240 has 32 divisors (see below), whose sum is σ = 121852080. Its totient is φ = 10831232.

The previous prime is 40617229. The next prime is 40617257. The reversal of 40617240 is 4271604.

It is a Harshad number since it is a multiple of its sum of digits (24).

It is a self number, because there is not a number n which added to its sum of digits gives 40617240.

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, 169119 + ... + 169358.

Almost surely, 2^40617240 is an apocalyptic number.

40617240 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

40617240 is an abundant number, since it is smaller than the sum of its proper divisors (81234840).

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

40617240 is a wasteful number, since it uses less digits than its factorization.

40617240 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 338491 (or 338487 counting only the distinct ones).

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

The square root of 40617240 is about 6373.1656184348. The cubic root of 40617240 is about 343.7453270990.

Adding to 40617240 its reverse (4271604), we get a palindrome (44888844).

The spelling of 40617240 in words is "forty million, six hundred seventeen thousand, two hundred forty".