61281432 has 24 divisors (see below), whose sum is σ = 165970740. Its totient is φ = 20427120.

The previous prime is 61281431. The next prime is 61281443. The reversal of 61281432 is 23418216.

61281432 is a `hidden beast` number, since 612 + 8 + 1 + 43 + 2 = 666.

It is a tau number, because it is divible by the number of its divisors (24).

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

It is a junction number, because it is equal to n+sod(n) for n = 61281396 and 61281405.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (61281431) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 425494 + ... + 425637.

Almost surely, 2^61281432 is an apocalyptic number.

It is an amenable number.

61281432 is an abundant number, since it is smaller than the sum of its proper divisors (104689308).

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

61281432 is a wasteful number, since it uses less digits than its factorization.

61281432 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 851143 (or 851136 counting only the distinct ones).

The product of its digits is 2304, while the sum is 27.

The square root of 61281432 is about 7828.2457805054. The cubic root of 61281432 is about 394.2541756212.

Adding to 61281432 its reverse (23418216), we get a palindrome (84699648).

The spelling of 61281432 in words is "sixty-one million, two hundred eighty-one thousand, four hundred thirty-two".