30136869 has 48 divisors (see below), whose sum is σ = 55486080. Its totient is φ = 15344640.

The previous prime is 30136861. The next prime is 30136891. The reversal of 30136869 is 96863103.

It is a happy number.

It is not a de Polignac number, because 30136869 - 2³ = 30136861 is a prime.

It is a super-2 number, since 2×30136869² = 1816461746246322, which contains 22 as substring.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (30136861) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 19609 + ... + 21089.

It is an arithmetic number, because the mean of its divisors is an integer number (1155960).

Almost surely, 2^30136869 is an apocalyptic number.

It is an amenable number.

30136869 is a deficient number, since it is larger than the sum of its proper divisors (25349211).

30136869 is a wasteful number, since it uses less digits than its factorization.

30136869 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1530 (or 1527 counting only the distinct ones).

The product of its (nonzero) digits is 23328, while the sum is 36.

The square root of 30136869 is about 5489.7057298183. The cubic root of 30136869 is about 311.1950713540.

The spelling of 30136869 in words is "thirty million, one hundred thirty-six thousand, eight hundred sixty-nine".