61284380 has 24 divisors (see below), whose sum is σ = 129245760. Its totient is φ = 24409280.

The previous prime is 61284373. The next prime is 61284383. The reversal of 61284380 is 8348216.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (61284383) 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 in 7 ways as a sum of consecutive naturals, for example, 1631 + ... + 11190.

It is an arithmetic number, because the mean of its divisors is an integer number (5385240).

Almost surely, 2^61284380 is an apocalyptic number.

It is an amenable number.

61284380 is an abundant number, since it is smaller than the sum of its proper divisors (67961380).

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

61284380 is a wasteful number, since it uses less digits than its factorization.

61284380 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13069 (or 13067 counting only the distinct ones).

The product of its (nonzero) digits is 9216, while the sum is 32.

The square root of 61284380 is about 7828.4340707449. The cubic root of 61284380 is about 394.2604975071.

The spelling of 61284380 in words is "sixty-one million, two hundred eighty-four thousand, three hundred eighty".