61847838 has 48 divisors (see below), whose sum is σ = 145650960. Its totient is φ = 18853632.

The previous prime is 61847827. The next prime is 61847843. The reversal of 61847838 is 83874816.

It is a junction number, because it is equal to n+sod(n) for n = 61847793 and 61847802.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 25273 + ... + 27611.

It is an arithmetic number, because the mean of its divisors is an integer number (3034395).

Almost surely, 2^61847838 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 61847838, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (72825480).

61847838 is an abundant number, since it is smaller than the sum of its proper divisors (83803122).

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

61847838 is a wasteful number, since it uses less digits than its factorization.

61847838 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2473 (or 2470 counting only the distinct ones).

The product of its digits is 258048, while the sum is 45.

The square root of 61847838 is about 7864.3396416991. The cubic root of 61847838 is about 395.4651104013.

The spelling of 61847838 in words is "sixty-one million, eight hundred forty-seven thousand, eight hundred thirty-eight".