30144077 has 4 divisors (see below), whose sum is σ = 31917276. Its totient is φ = 28370880.

The previous prime is 30144073. The next prime is 30144097. The reversal of 30144077 is 77044103.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 20620681 + 9523396 = 4541^2 + 3086^2 .

It is a cyclic number.

It is not a de Polignac number, because 30144077 - 2² = 30144073 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (30144073) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 886574 + ... + 886607.

It is an arithmetic number, because the mean of its divisors is an integer number (7979319).

Almost surely, 2^30144077 is an apocalyptic number.

It is an amenable number.

30144077 is a deficient number, since it is larger than the sum of its proper divisors (1773199).

30144077 is a wasteful number, since it uses less digits than its factorization.

30144077 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1773198.

The product of its (nonzero) digits is 2352, while the sum is 26.

The square root of 30144077 is about 5490.3621920598. The cubic root of 30144077 is about 311.2198794527.

Adding to 30144077 its sum of digits (26), we get a palindrome (30144103).

The spelling of 30144077 in words is "thirty million, one hundred forty-four thousand, seventy-seven".