40723830 has 128 divisors (see below), whose sum is σ = 128563200. Its totient is φ = 8975232.

The previous prime is 40723829. The next prime is 40723843. The reversal of 40723830 is 3832704.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a junction number, because it is equal to n+sod(n) for n = 40723794 and 40723803.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 54439 + ... + 55181.

It is an arithmetic number, because the mean of its divisors is an integer number (1004400).

Almost surely, 2^40723830 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 40723830, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (64281600).

40723830 is an abundant number, since it is smaller than the sum of its proper divisors (87839370).

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

40723830 is a wasteful number, since it uses less digits than its factorization.

40723830 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 795 (or 789 counting only the distinct ones).

The product of its (nonzero) digits is 4032, while the sum is 27.

The square root of 40723830 is about 6381.5225455999. The cubic root of 40723830 is about 344.0457562626.

The spelling of 40723830 in words is "forty million, seven hundred twenty-three thousand, eight hundred thirty".