40913040 has 200 divisors, whose sum is σ = 150043968. Its totient is φ = 9219840.

The previous prime is 40913029. The next prime is 40913051. The reversal of 40913040 is 4031904.

It is an interprime number because it is at equal distance from previous prime (40913029) and next prime (40913051).

It is a Harshad number since it is a multiple of its sum of digits (21).

It is a junction number, because it is equal to n+sod(n) for n = 40912998 and 40913016.

It is an unprimeable number.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 576205 + ... + 576275.

Almost surely, 2^40913040 is an apocalyptic number.

40913040 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 40913040, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (75021984).

40913040 is an abundant number, since it is smaller than the sum of its proper divisors (109130928).

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

40913040 is an equidigital number, since it uses as much as digits as its factorization.

40913040 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 115 (or 88 counting only the distinct ones).

The product of its (nonzero) digits is 432, while the sum is 21.

The square root of 40913040 is about 6396.3301978556. The cubic root of 40913040 is about 344.5777653246.

Adding to 40913040 its reverse (4031904), we get a palindrome (44944944).

The spelling of 40913040 in words is "forty million, nine hundred thirteen thousand, forty".