40858740 has 144 divisors (see below), whose sum is σ = 140649600. Its totient is φ = 9517824.

The previous prime is 40858733. The next prime is 40858747. The reversal of 40858740 is 4785804.

It is an interprime number because it is at equal distance from previous prime (40858733) and next prime (40858747).

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a junction number, because it is equal to n+sod(n) for n = 40858695 and 40858704.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40858747) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 44001 + ... + 44919.

Almost surely, 2^40858740 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 40858740, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (70324800).

40858740 is an abundant number, since it is smaller than the sum of its proper divisors (99790860).

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

40858740 is a wasteful number, since it uses less digits than its factorization.

40858740 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 966 (or 961 counting only the distinct ones).

The product of its (nonzero) digits is 35840, while the sum is 36.

The square root of 40858740 is about 6392.0841671555. The cubic root of 40858740 is about 344.4252560321.

The spelling of 40858740 in words is "forty million, eight hundred fifty-eight thousand, seven hundred forty".