61280328 has 16 divisors (see below), whose sum is σ = 153200880. Its totient is φ = 20426768.

The previous prime is 61280321. The next prime is 61280333. The reversal of 61280328 is 82308216.

It is a junction number, because it is equal to n+sod(n) for n = 61280295 and 61280304.

It is not an unprimeable number, because it can be changed into a prime (61280321) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1276650 + ... + 1276697.

It is an arithmetic number, because the mean of its divisors is an integer number (9575055).

Almost surely, 2^61280328 is an apocalyptic number.

It is an amenable number.

61280328 is an abundant number, since it is smaller than the sum of its proper divisors (91920552).

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

61280328 is a wasteful number, since it uses less digits than its factorization.

61280328 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2553356 (or 2553352 counting only the distinct ones).

The product of its (nonzero) digits is 4608, while the sum is 30.

The square root of 61280328 is about 7828.1752663057. The cubic root of 61280328 is about 394.2518080784.

The spelling of 61280328 in words is "sixty-one million, two hundred eighty thousand, three hundred twenty-eight".