61433140 has 24 divisors (see below), whose sum is σ = 130462920. Its totient is φ = 24296448.

The previous prime is 61433123. The next prime is 61433153. The reversal of 61433140 is 4133416.

61433140 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 4 ways, for example, as 8259876 + 53173264 = 2874^2 + 7292^2 .

It is a congruent number.

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 7 ways as a sum of consecutive naturals, for example, 15477 + ... + 19036.

It is an arithmetic number, because the mean of its divisors is an integer number (5435955).

Almost surely, 2^61433140 is an apocalyptic number.

It is an amenable number.

61433140 is an abundant number, since it is smaller than the sum of its proper divisors (69029780).

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

61433140 is a wasteful number, since it uses less digits than its factorization.

61433140 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 34611 (or 34609 counting only the distinct ones).

The product of its (nonzero) digits is 864, while the sum is 22.

The square root of 61433140 is about 7837.9295735545. The cubic root of 61433140 is about 394.5792453959.

Adding to 61433140 its reverse (4133416), we get a palindrome (65566556).

The spelling of 61433140 in words is "sixty-one million, four hundred thirty-three thousand, one hundred forty".