920544428 has 6 divisors (see below), whose sum is σ = 1610952756. Its totient is φ = 460272212.

The previous prime is 920544421. The next prime is 920544481. The reversal of 920544428 is 824445029.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 920544391 and 920544400.

It is not an unprimeable number, because it can be changed into a prime (920544421) 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 as a sum of consecutive naturals, namely, 115068050 + ... + 115068057.

It is an arithmetic number, because the mean of its divisors is an integer number (268492126).

Almost surely, 2^920544428 is an apocalyptic number.

It is an amenable number.

920544428 is a deficient number, since it is larger than the sum of its proper divisors (690408328).

920544428 is a wasteful number, since it uses less digits than its factorization.

920544428 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 230136111 (or 230136109 counting only the distinct ones).

The product of its (nonzero) digits is 92160, while the sum is 38.

The square root of 920544428 is about 30340.4750786800. The cubic root of 920544428 is about 972.7806378767.

The spelling of 920544428 in words is "nine hundred twenty million, five hundred forty-four thousand, four hundred twenty-eight".