30101656 has 16 divisors (see below), whose sum is σ = 60782400. Its totient is φ = 13893024.

The previous prime is 30101653. The next prime is 30101663. The reversal of 30101656 is 65610103.

It is a super-2 number, since 2×30101656² = 1812219387884672, which contains 22 as substring.

It is an alternating number because its digits alternate between odd and even.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (30101653) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 144616 + ... + 144823.

It is an arithmetic number, because the mean of its divisors is an integer number (3798900).

Almost surely, 2^30101656 is an apocalyptic number.

It is an amenable number.

30101656 is an abundant number, since it is smaller than the sum of its proper divisors (30680744).

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

30101656 is a wasteful number, since it uses less digits than its factorization.

30101656 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 289458 (or 289454 counting only the distinct ones).

The product of its (nonzero) digits is 540, while the sum is 22.

The square root of 30101656 is about 5486.4976077640. The cubic root of 30101656 is about 311.0738202847.

Adding to 30101656 its reverse (65610103), we get a palindrome (95711759).

The spelling of 30101656 in words is "thirty million, one hundred one thousand, six hundred fifty-six".