1213760528 has 10 divisors (see below), whose sum is σ = 2351661054. Its totient is φ = 606880256.

The previous prime is 1213760521. The next prime is 1213760573. The reversal of 1213760528 is 8250673121.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 1175666944 + 38093584 = 34288^2 + 6172^2 .

It is not an unprimeable number, because it can be changed into a prime (1213760521) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 37930001 + ... + 37930032.

Almost surely, 2^1213760528 is an apocalyptic number.

It is an amenable number.

1213760528 is a deficient number, since it is larger than the sum of its proper divisors (1137900526).

1213760528 is an equidigital number, since it uses as much as digits as its factorization.

1213760528 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 75860041 (or 75860035 counting only the distinct ones).

The product of its (nonzero) digits is 20160, while the sum is 35.

The square root of 1213760528 is about 34839.0661183678. The cubic root of 1213760528 is about 1066.7050144200.

The spelling of 1213760528 in words is "one billion, two hundred thirteen million, seven hundred sixty thousand, five hundred twenty-eight".