61725328 has 40 divisors (see below), whose sum is σ = 139008960. Its totient is φ = 26002560.

The previous prime is 61725299. The next prime is 61725331. The reversal of 61725328 is 82352716.

It is a happy number.

It is a super-2 number, since 2×61725328² = 7620032233415168, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 61725293 and 61725302.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1938 + ... + 11278.

It is an arithmetic number, because the mean of its divisors is an integer number (3475224).

Almost surely, 2^61725328 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 61725328, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (69504480).

61725328 is an abundant number, since it is smaller than the sum of its proper divisors (77283632).

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

61725328 is a wasteful number, since it uses less digits than its factorization.

61725328 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9415 (or 9409 counting only the distinct ones).

The product of its digits is 20160, while the sum is 34.

The square root of 61725328 is about 7856.5468241461. The cubic root of 61725328 is about 395.2038215304.

The spelling of 61725328 in words is "sixty-one million, seven hundred twenty-five thousand, three hundred twenty-eight".