61901028 has 36 divisors (see below), whose sum is σ = 178825920. Its totient is φ = 17685936.

The previous prime is 61901023. The next prime is 61901033. The reversal of 61901028 is 82010916.

It is an interprime number because it is at equal distance from previous prime (61901023) and next prime (61901033).

It is a tau number, because it is divible by the number of its divisors (36).

It is a junction number, because it is equal to n+sod(n) for n = 61900992 and 61901010.

It is not an unprimeable number, because it can be changed into a prime (61901023) 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 11 ways as a sum of consecutive naturals, for example, 122568 + ... + 123071.

Almost surely, 2^61901028 is an apocalyptic number.

It is an amenable number.

61901028 is an abundant number, since it is smaller than the sum of its proper divisors (116924892).

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

61901028 is a wasteful number, since it uses less digits than its factorization.

61901028 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 245656 (or 245651 counting only the distinct ones).

The product of its (nonzero) digits is 864, while the sum is 27.

The square root of 61901028 is about 7867.7206356098. The cubic root of 61901028 is about 395.5784464138.

The spelling of 61901028 in words is "sixty-one million, nine hundred one thousand, twenty-eight".