40640830 has 8 divisors (see below), whose sum is σ = 73153512. Its totient is φ = 16256328.

The previous prime is 40640827. The next prime is 40640843. The reversal of 40640830 is 3804604.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a junction number, because it is equal to n+sod(n) for n = 40640795 and 40640804.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2032032 + ... + 2032051.

It is an arithmetic number, because the mean of its divisors is an integer number (9144189).

Almost surely, 2^40640830 is an apocalyptic number.

40640830 is a deficient number, since it is larger than the sum of its proper divisors (32512682).

40640830 is a wasteful number, since it uses less digits than its factorization.

40640830 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4064090.

The product of its (nonzero) digits is 2304, while the sum is 25.

The square root of 40640830 is about 6375.0160784111. The cubic root of 40640830 is about 343.8118619244.

The spelling of 40640830 in words is "forty million, six hundred forty thousand, eight hundred thirty".