920741840 has 40 divisors (see below), whose sum is σ = 2167837440. Its totient is φ = 363632256.

The previous prime is 920741839. The next prime is 920741867. The reversal of 920741840 is 48147029.

It is a tau number, because it is divible by the number of its divisors (40).

It is a self number, because there is not a number n which added to its sum of digits gives 920741840.

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, 66524 + ... + 79163.

It is an arithmetic number, because the mean of its divisors is an integer number (54195936).

Almost surely, 2^920741840 is an apocalyptic number.

It is an amenable number.

920741840 is an abundant number, since it is smaller than the sum of its proper divisors (1247095600).

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

920741840 is a wasteful number, since it uses less digits than its factorization.

920741840 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 145779 (or 145773 counting only the distinct ones).

The product of its (nonzero) digits is 16128, while the sum is 35.

The square root of 920741840 is about 30343.7281822785. The cubic root of 920741840 is about 972.8501709484.

Adding to 920741840 its reverse (48147029), we get a palindrome (968888869).

The spelling of 920741840 in words is "nine hundred twenty million, seven hundred forty-one thousand, eight hundred forty".