61879828 has 12 divisors (see below), whose sum is σ = 108370080. Its totient is φ = 30916952.

The previous prime is 61879739. The next prime is 61879859. The reversal of 61879828 is 82897816.

It is a super-2 number, since 2×61879828² = 7658226226619168, which contains 22 as substring.

It is a congruent number.

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, 1275 + ... + 11197.

It is an arithmetic number, because the mean of its divisors is an integer number (9030840).

Almost surely, 2^61879828 is an apocalyptic number.

It is an amenable number.

61879828 is a deficient number, since it is larger than the sum of its proper divisors (46490252).

61879828 is a wasteful number, since it uses less digits than its factorization.

61879828 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11486 (or 11484 counting only the distinct ones).

The product of its digits is 387072, while the sum is 49.

The square root of 61879828 is about 7866.3732431153. The cubic root of 61879828 is about 395.5332817324.

The spelling of 61879828 in words is "sixty-one million, eight hundred seventy-nine thousand, eight hundred twenty-eight".