40204830 has 64 divisors (see below), whose sum is σ = 105504768. Its totient is φ = 9761280.

The previous prime is 40204811. The next prime is 40204859. The reversal of 40204830 is 3840204.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 40204797 and 40204806.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 14539 + ... + 17081.

It is an arithmetic number, because the mean of its divisors is an integer number (1648512).

Almost surely, 2^40204830 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 40204830, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (52752384).

40204830 is an abundant number, since it is smaller than the sum of its proper divisors (65299938).

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

40204830 is a wasteful number, since it uses less digits than its factorization.

40204830 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2601.

The product of its (nonzero) digits is 768, while the sum is 21.

The square root of 40204830 is about 6340.7278761984. The cubic root of 40204830 is about 342.5779530239.

The spelling of 40204830 in words is "forty million, two hundred four thousand, eight hundred thirty".