61839428 has 24 divisors (see below), whose sum is σ = 123950400. Its totient is φ = 26444448.

The previous prime is 61839403. The next prime is 61839431. The reversal of 61839428 is 82493816.

61839428 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×61839428² = 7648229710734368, which contains 22 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 12083 + ... + 16421.

It is an arithmetic number, because the mean of its divisors is an integer number (5164600).

Almost surely, 2^61839428 is an apocalyptic number.

It is an amenable number.

61839428 is an abundant number, since it is smaller than the sum of its proper divisors (62110972).

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

61839428 is a wasteful number, since it uses less digits than its factorization.

61839428 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4859 (or 4857 counting only the distinct ones).

The product of its digits is 82944, while the sum is 41.

The square root of 61839428 is about 7863.8049314565. The cubic root of 61839428 is about 395.4471846206.

The spelling of 61839428 in words is "sixty-one million, eight hundred thirty-nine thousand, four hundred twenty-eight".