912821650 has 48 divisors (see below), whose sum is σ = 1863021384. Its totient is φ = 330670080.

The previous prime is 912821621. The next prime is 912821713. The reversal of 912821650 is 56128219.

It can be written as a sum of positive squares in 12 ways, for example, as 148133241 + 764688409 = 12171^2 + 27653^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 21202 + ... + 47698.

Almost surely, 2^912821650 is an apocalyptic number.

912821650 is an abundant number, since it is smaller than the sum of its proper divisors (950199734).

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

912821650 is a wasteful number, since it uses less digits than its factorization.

912821650 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 26575 (or 26570 counting only the distinct ones).

The product of its (nonzero) digits is 8640, while the sum is 34.

The square root of 912821650 is about 30212.9384535831. The cubic root of 912821650 is about 970.0526594857.

Adding to 912821650 its reverse (56128219), we get a palindrome (968949869).

The spelling of 912821650 in words is "nine hundred twelve million, eight hundred twenty-one thousand, six hundred fifty".