30488761 has 4 divisors (see below), whose sum is σ = 30499812. Its totient is φ = 30477712.

The previous prime is 30488753. The next prime is 30488791. The reversal of 30488761 is 16788403.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It can be written as a sum of positive squares in 2 ways, for example, as 26327161 + 4161600 = 5131^2 + 2040^2 .

It is a cyclic number.

It is not a de Polignac number, because 30488761 - 2³ = 30488753 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 30488761.

It is not an unprimeable number, because it can be changed into a prime (30488791) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2475 + ... + 8191.

It is an arithmetic number, because the mean of its divisors is an integer number (7624953).

Almost surely, 2^30488761 is an apocalyptic number.

It is an amenable number.

30488761 is a deficient number, since it is larger than the sum of its proper divisors (11051).

30488761 is an equidigital number, since it uses as much as digits as its factorization.

30488761 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11050.

The product of its (nonzero) digits is 32256, while the sum is 37.

The square root of 30488761 is about 5521.6628835886. The cubic root of 30488761 is about 312.4016065699.

The spelling of 30488761 in words is "thirty million, four hundred eighty-eight thousand, seven hundred sixty-one".