920891530 has 32 divisors (see below), whose sum is σ = 1890123984. Its totient is φ = 320019456.

The previous prime is 920891527. The next prime is 920891533. The reversal of 920891530 is 35198029.

920891530 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (920891527) and next prime (920891533).

It can be written as a sum of positive squares in 8 ways, for example, as 373378329 + 547513201 = 19323^2 + 23399^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 920891530.

It is not an unprimeable number, because it can be changed into a prime (920891533) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 206137 + ... + 210556.

Almost surely, 2^920891530 is an apocalyptic number.

920891530 is an abundant number, since it is smaller than the sum of its proper divisors (969232454).

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

920891530 is a wasteful number, since it uses less digits than its factorization.

920891530 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 416730.

The product of its (nonzero) digits is 19440, while the sum is 37.

The square root of 920891530 is about 30346.1946543549. The cubic root of 920891530 is about 972.9028886031.

The spelling of 920891530 in words is "nine hundred twenty million, eight hundred ninety-one thousand, five hundred thirty".