40917240 has 192 divisors, whose sum is σ = 163800000. Its totient is φ = 8626176.

The previous prime is 40917223. The next prime is 40917259. The reversal of 40917240 is 4271904.

It is a happy number.

40917240 is a `hidden beast` number, since 409 + 17 + 240 = 666.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 32136 + ... + 33384.

It is an arithmetic number, because the mean of its divisors is an integer number (853125).

Almost surely, 2^40917240 is an apocalyptic number.

40917240 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 40917240, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (81900000).

40917240 is an abundant number, since it is smaller than the sum of its proper divisors (122882760).

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

40917240 is a wasteful number, since it uses less digits than its factorization.

40917240 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1286 (or 1279 counting only the distinct ones).

The product of its (nonzero) digits is 2016, while the sum is 27.

The square root of 40917240 is about 6396.6585026872. The cubic root of 40917240 is about 344.5895559998.

The spelling of 40917240 in words is "forty million, nine hundred seventeen thousand, two hundred forty".