61528300 has 36 divisors (see below), whose sum is σ = 134401120. Its totient is φ = 24448320.

The previous prime is 61528277. The next prime is 61528309. The reversal of 61528300 is 382516.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (25).

It is not an unprimeable number, because it can be changed into a prime (61528309) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 13741 + ... + 17659.

Almost surely, 2^61528300 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 61528300, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (67200560).

61528300 is an abundant number, since it is smaller than the sum of its proper divisors (72872820).

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

61528300 is a wasteful number, since it uses less digits than its factorization.

61528300 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4090 (or 4083 counting only the distinct ones).

The product of its (nonzero) digits is 1440, while the sum is 25.

The square root of 61528300 is about 7843.9977052521. The cubic root of 61528300 is about 394.7828748499.

The spelling of 61528300 in words is "sixty-one million, five hundred twenty-eight thousand, three hundred".