61253728 has 12 divisors (see below), whose sum is σ = 120593340. Its totient is φ = 30626848.

The previous prime is 61253719. The next prime is 61253729. The reversal of 61253728 is 82735216.

It is a happy number.

It is a hoax number, since the sum of its digits (34) coincides with the sum of the digits of its distinct prime factors.

It is a junction number, because it is equal to n+sod(n) for n = 61253693 and 61253702.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (61253729) 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 as a sum of consecutive naturals, namely, 957058 + ... + 957121.

It is an arithmetic number, because the mean of its divisors is an integer number (10049445).

Almost surely, 2^61253728 is an apocalyptic number.

It is an amenable number.

61253728 is a deficient number, since it is larger than the sum of its proper divisors (59339612).

61253728 is a wasteful number, since it uses less digits than its factorization.

61253728 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1914189 (or 1914181 counting only the distinct ones).

The product of its digits is 20160, while the sum is 34.

The square root of 61253728 is about 7826.4760908087. The cubic root of 61253728 is about 394.1947554256.

The spelling of 61253728 in words is "sixty-one million, two hundred fifty-three thousand, seven hundred twenty-eight".