61282880 has 28 divisors (see below), whose sum is σ = 145930620. Its totient is φ = 24513024.

The previous prime is 61282867. The next prime is 61282891. The reversal of 61282880 is 8828216.

It can be written as a sum of positive squares in 2 ways, for example, as 28472896 + 32809984 = 5336^2 + 5728^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 61282880.

It is an unprimeable number.

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, 95435 + ... + 96074.

Almost surely, 2^61282880 is an apocalyptic number.

It is an amenable number.

61282880 is an abundant number, since it is smaller than the sum of its proper divisors (84647740).

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

61282880 is a wasteful number, since it uses less digits than its factorization.

61282880 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 191526 (or 191516 counting only the distinct ones).

The product of its (nonzero) digits is 12288, while the sum is 35.

The square root of 61282880 is about 7828.3382655580. The cubic root of 61282880 is about 394.2572808334.

The spelling of 61282880 in words is "sixty-one million, two hundred eighty-two thousand, eight hundred eighty".