101001028 has 6 divisors (see below), whose sum is σ = 176751806. Its totient is φ = 50500512.

The previous prime is 101001013. The next prime is 101001037. The reversal of 101001028 is 820100101.

It can be written as a sum of positive squares in only one way, i.e., 59938564 + 41062464 = 7742^2 + 6408^2 .

It is a junction number, because it is equal to n+sod(n) for n = 101000999 and 101001017.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 12625125 + ... + 12625132.

Almost surely, 2^101001028 is an apocalyptic number.

It is an amenable number.

101001028 is a deficient number, since it is larger than the sum of its proper divisors (75750778).

101001028 is a wasteful number, since it uses less digits than its factorization.

101001028 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25250261 (or 25250259 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 13.

The square root of 101001028 is about 10049.9267659023. The cubic root of 101001028 is about 465.7025307769.

Adding to 101001028 its reverse (820100101), we get a palindrome (921101129).

The spelling of 101001028 in words is "one hundred one million, one thousand, twenty-eight".