30240691 has 6 divisors (see below), whose sum is σ = 32746020. Its totient is φ = 27914328.

The previous prime is 30240677. The next prime is 30240709. The reversal of 30240691 is 19604203.

It is not a de Polignac number, because 30240691 - 2⁵ = 30240659 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (30240601) 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 in 5 ways as a sum of consecutive naturals, for example, 89301 + ... + 89638.

It is an arithmetic number, because the mean of its divisors is an integer number (5457670).

Almost surely, 2^30240691 is an apocalyptic number.

30240691 is a deficient number, since it is larger than the sum of its proper divisors (2505329).

30240691 is a wasteful number, since it uses less digits than its factorization.

30240691 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 178965 (or 178952 counting only the distinct ones).

The product of its (nonzero) digits is 1296, while the sum is 25.

The square root of 30240691 is about 5499.1536621557. The cubic root of 30240691 is about 311.5520191177.

Adding to 30240691 its reverse (19604203), we get a palindrome (49844894).

The spelling of 30240691 in words is "thirty million, two hundred forty thousand, six hundred ninety-one".