20002628 has 6 divisors (see below), whose sum is σ = 35004606. Its totient is φ = 10001312.

The previous prime is 20002613. The next prime is 20002639. The reversal of 20002628 is 82620002.

It can be written as a sum of positive squares in only one way, i.e., 19998784 + 3844 = 4472^2 + 62^2 .

It is an unprimeable number.

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 as a sum of consecutive naturals, namely, 2500325 + ... + 2500332.

It is an arithmetic number, because the mean of its divisors is an integer number (5834101).

Almost surely, 2^20002628 is an apocalyptic number.

It is an amenable number.

20002628 is a deficient number, since it is larger than the sum of its proper divisors (15001978).

20002628 is a wasteful number, since it uses less digits than its factorization.

20002628 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5000661 (or 5000659 counting only the distinct ones).

The product of its (nonzero) digits is 384, while the sum is 20.

The square root of 20002628 is about 4472.4297646805. The cubic root of 20002628 is about 271.4536502879.

The spelling of 20002628 in words is "twenty million, two thousand, six hundred twenty-eight".