920561328 has 40 divisors (see below), whose sum is σ = 2642353200. Its totient is φ = 306853632.

The previous prime is 920561321. The next prime is 920561333. The reversal of 920561328 is 823165029.

920561328 is a `hidden beast` number, since 92 + 0 + 561 + 3 + 2 + 8 = 666.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a junction number, because it is equal to n+sod(n) for n = 920561292 and 920561301.

It is not an unprimeable number, because it can be changed into a prime (920561321) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1065033 + ... + 1065896.

It is an arithmetic number, because the mean of its divisors is an integer number (66058830).

Almost surely, 2^920561328 is an apocalyptic number.

It is an amenable number.

920561328 is an abundant number, since it is smaller than the sum of its proper divisors (1721791872).

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

920561328 is a wasteful number, since it uses less digits than its factorization.

920561328 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2130946 (or 2130934 counting only the distinct ones).

The product of its (nonzero) digits is 25920, while the sum is 36.

The square root of 920561328 is about 30340.7535832583. The cubic root of 920561328 is about 972.7865908366.

The spelling of 920561328 in words is "nine hundred twenty million, five hundred sixty-one thousand, three hundred twenty-eight".