61236144 has 30 divisors (see below), whose sum is σ = 171376556. Its totient is φ = 20412000.

The previous prime is 61236137. The next prime is 61236163. The reversal of 61236144 is 44163216.

61236144 is a `hidden beast` number, since 612 + 3 + 6 + 1 + 44 = 666.

61236144 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a nude number because it is divisible by every one of its digits.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 212482 + ... + 212769.

Almost surely, 2^61236144 is an apocalyptic number.

It is an amenable number.

61236144 is an abundant number, since it is smaller than the sum of its proper divisors (110140412).

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

61236144 is a wasteful number, since it uses less digits than its factorization.

61236144 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 425265 (or 425256 counting only the distinct ones).

The product of its digits is 3456, while the sum is 27.

The square root of 61236144 is about 7825.3526438110. The cubic root of 61236144 is about 394.1570315505.

The spelling of 61236144 in words is "sixty-one million, two hundred thirty-six thousand, one hundred forty-four".