61670028 has 48 divisors (see below), whose sum is σ = 167820800. Its totient is φ = 17618832.

The previous prime is 61670023. The next prime is 61670051. The reversal of 61670028 is 82007616.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 61669977 and 61670004.

It is not an unprimeable number, because it can be changed into a prime (61670023) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3376 + ... + 11607.

Almost surely, 2^61670028 is an apocalyptic number.

It is an amenable number.

61670028 is an abundant number, since it is smaller than the sum of its proper divisors (106150772).

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

61670028 is a wasteful number, since it uses less digits than its factorization.

61670028 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15011 (or 14995 counting only the distinct ones).

The product of its (nonzero) digits is 4032, while the sum is 30.

The square root of 61670028 is about 7853.0266776575. The cubic root of 61670028 is about 395.0857646382.

The spelling of 61670028 in words is "sixty-one million, six hundred seventy thousand, twenty-eight".