61283838 has 96 divisors (see below), whose sum is σ = 159344640. Its totient is φ = 15364800.

The previous prime is 61283837. The next prime is 61283839. The reversal of 61283838 is 83838216.

It is an interprime number because it is at equal distance from previous prime (61283837) and next prime (61283839).

It is a junction number, because it is equal to n+sod(n) for n = 61283796 and 61283805.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (61283837) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 157348 + ... + 157736.

It is an arithmetic number, because the mean of its divisors is an integer number (1659840).

Almost surely, 2^61283838 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 61283838, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (79672320).

61283838 is an abundant number, since it is smaller than the sum of its proper divisors (98060802).

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

61283838 is a wasteful number, since it uses less digits than its factorization.

61283838 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 454 (or 443 counting only the distinct ones).

The product of its digits is 55296, while the sum is 39.

The square root of 61283838 is about 7828.3994532727. The cubic root of 61283838 is about 394.2593352217.

The spelling of 61283838 in words is "sixty-one million, two hundred eighty-three thousand, eight hundred thirty-eight".