30261144 has 16 divisors (see below), whose sum is σ = 75652920. Its totient is φ = 10087040.

The previous prime is 30261109. The next prime is 30261149. The reversal of 30261144 is 44116203.

It is a self number, because there is not a number n which added to its sum of digits gives 30261144.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (30261149) 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, 630417 + ... + 630464.

Almost surely, 2^30261144 is an apocalyptic number.

It is an amenable number.

30261144 is an abundant number, since it is smaller than the sum of its proper divisors (45391776).

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

30261144 is a wasteful number, since it uses less digits than its factorization.

30261144 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1260890 (or 1260886 counting only the distinct ones).

The product of its (nonzero) digits is 576, while the sum is 21.

The square root of 30261144 is about 5501.0129976214. The cubic root of 30261144 is about 311.6222416908.

Adding to 30261144 its reverse (44116203), we get a palindrome (74377347).

The spelling of 30261144 in words is "thirty million, two hundred sixty-one thousand, one hundred forty-four".