40860840 has 64 divisors (see below), whose sum is σ = 123393600. Its totient is φ = 10824192.

The previous prime is 40860829. The next prime is 40860847. The reversal of 40860840 is 4806804.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a junction number, because it is equal to n+sod(n) for n = 40860798 and 40860807.

It is not an unprimeable number, because it can be changed into a prime (40860847) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 18516 + ... + 20604.

It is an arithmetic number, because the mean of its divisors is an integer number (1928025).

Almost surely, 2^40860840 is an apocalyptic number.

40860840 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 40860840, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (61696800).

40860840 is an abundant number, since it is smaller than the sum of its proper divisors (82532760).

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

40860840 is a wasteful number, since it uses less digits than its factorization.

40860840 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2266 (or 2262 counting only the distinct ones).

The product of its (nonzero) digits is 6144, while the sum is 30.

The square root of 40860840 is about 6392.2484307167. The cubic root of 40860840 is about 344.4311566925.

The spelling of 40860840 in words is "forty million, eight hundred sixty thousand, eight hundred forty".