61560828 has 72 divisors (see below), whose sum is σ = 178913280. Its totient is φ = 17483040.

The previous prime is 61560809. The next prime is 61560833. The reversal of 61560828 is 82806516.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a junction number, because it is equal to n+sod(n) for n = 61560792 and 61560801.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 47493 + ... + 48771.

Almost surely, 2^61560828 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 61560828, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (89456640).

61560828 is an abundant number, since it is smaller than the sum of its proper divisors (117352452).

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

61560828 is a wasteful number, since it uses less digits than its factorization.

61560828 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1487 (or 1482 counting only the distinct ones).

The product of its (nonzero) digits is 23040, while the sum is 36.

The square root of 61560828 is about 7846.0708638146. The cubic root of 61560828 is about 394.8524321922.

The spelling of 61560828 in words is "sixty-one million, five hundred sixty thousand, eight hundred twenty-eight".