920040830 has 16 divisors (see below), whose sum is σ = 1659144384. Its totient is φ = 367333920.

The previous prime is 920040811. The next prime is 920040889. The reversal of 920040830 is 38040029.

It is a self number, because there is not a number n which added to its sum of digits gives 920040830.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 79622 + ... + 90441.

It is an arithmetic number, because the mean of its divisors is an integer number (103696524).

Almost surely, 2^920040830 is an apocalyptic number.

920040830 is a deficient number, since it is larger than the sum of its proper divisors (739103554).

920040830 is a wasteful number, since it uses less digits than its factorization.

920040830 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 170611.

The product of its (nonzero) digits is 1728, while the sum is 26.

The square root of 920040830 is about 30332.1748313569. The cubic root of 920040830 is about 972.6032139777.

Adding to 920040830 its reverse (38040029), we get a palindrome (958080859).

The spelling of 920040830 in words is "nine hundred twenty million, forty thousand, eight hundred thirty".