61570128 has 40 divisors (see below), whose sum is σ = 159417376. Its totient is φ = 20476800.

The previous prime is 61570121. The next prime is 61570169. The reversal of 61570128 is 82107516.

It is a junction number, because it is equal to n+sod(n) for n = 61570095 and 61570104.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (61570121) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 24783 + ... + 27153.

Almost surely, 2^61570128 is an apocalyptic number.

It is an amenable number.

61570128 is an abundant number, since it is smaller than the sum of its proper divisors (97847248).

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

61570128 is a wasteful number, since it uses less digits than its factorization.

61570128 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2923 (or 2917 counting only the distinct ones).

The product of its (nonzero) digits is 3360, while the sum is 30.

The square root of 61570128 is about 7846.6634947600. The cubic root of 61570128 is about 394.8723146555.

The spelling of 61570128 in words is "sixty-one million, five hundred seventy thousand, one hundred twenty-eight".