61078280 has 32 divisors (see below), whose sum is σ = 145511640. Its totient is φ = 22993920.

The previous prime is 61078273. The next prime is 61078291. The reversal of 61078280 is 8287016.

It can be written as a sum of positive squares in 4 ways, for example, as 42016324 + 19061956 = 6482^2 + 4366^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 44231 + ... + 45590.

Almost surely, 2^61078280 is an apocalyptic number.

It is an amenable number.

61078280 is an abundant number, since it is smaller than the sum of its proper divisors (84433360).

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

61078280 is a wasteful number, since it uses less digits than its factorization.

61078280 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 89849 (or 89845 counting only the distinct ones).

The product of its (nonzero) digits is 5376, while the sum is 32.

The square root of 61078280 is about 7815.2594326740. The cubic root of 61078280 is about 393.8180337636.

The spelling of 61078280 in words is "sixty-one million, seventy-eight thousand, two hundred eighty".