61206828 has 72 divisors (see below), whose sum is σ = 153619200. Its totient is φ = 18960480.

The previous prime is 61206797. The next prime is 61206829. The reversal of 61206828 is 82860216.

It is not an unprimeable number, because it can be changed into a prime (61206829) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 307473 + ... + 307671.

It is an arithmetic number, because the mean of its divisors is an integer number (2133600).

Almost surely, 2^61206828 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 61206828, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (76809600).

61206828 is an abundant number, since it is smaller than the sum of its proper divisors (92412372).

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

61206828 is a wasteful number, since it uses less digits than its factorization.

61206828 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 315 (or 294 counting only the distinct ones).

The product of its (nonzero) digits is 9216, while the sum is 33.

The square root of 61206828 is about 7823.4792771503. The cubic root of 61206828 is about 394.0941223423.

The spelling of 61206828 in words is "sixty-one million, two hundred six thousand, eight hundred twenty-eight".