40998420 has 96 divisors (see below), whose sum is σ = 133136640. Its totient is φ = 10454400.

The previous prime is 40998403. The next prime is 40998421. The reversal of 40998420 is 2489904.

It is a happy number.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40998421) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 10770 + ... + 14070.

It is an arithmetic number, because the mean of its divisors is an integer number (1386840).

Almost surely, 2^40998420 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 40998420, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (66568320).

40998420 is an abundant number, since it is smaller than the sum of its proper divisors (92138220).

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

40998420 is a wasteful number, since it uses less digits than its factorization.

40998420 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3342 (or 3334 counting only the distinct ones).

The product of its (nonzero) digits is 20736, while the sum is 36.

The square root of 40998420 is about 6403.0008589723. Note that the first 3 decimals coincide. The cubic root of 40998420 is about 344.8172945641.

The spelling of 40998420 in words is "forty million, nine hundred ninety-eight thousand, four hundred twenty".