40057830 has 24 divisors (see below), whose sum is σ = 104150592. Its totient is φ = 10682064.

The previous prime is 40057781. The next prime is 40057837. The reversal of 40057830 is 3875004.

It is a junction number, because it is equal to n+sod(n) for n = 40057794 and 40057803.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40057837) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 222454 + ... + 222633.

It is an arithmetic number, because the mean of its divisors is an integer number (4339608).

Almost surely, 2^40057830 is an apocalyptic number.

40057830 is an abundant number, since it is smaller than the sum of its proper divisors (64092762).

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

40057830 is a wasteful number, since it uses less digits than its factorization.

40057830 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 445100 (or 445097 counting only the distinct ones).

The product of its (nonzero) digits is 3360, while the sum is 27.

The square root of 40057830 is about 6329.1255320147. The cubic root of 40057830 is about 342.1599231545.

The spelling of 40057830 in words is "forty million, fifty-seven thousand, eight hundred thirty".