10020815 has 16 divisors (see below), whose sum is σ = 13824000. Its totient is φ = 6830880.

The previous prime is 10020797. The next prime is 10020817. The reversal of 10020815 is 51802001.

It is not a de Polignac number, because 10020815 - 2⁸ = 10020559 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 10020793 and 10020802.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (10020817) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 5936 + ... + 7434.

It is an arithmetic number, because the mean of its divisors is an integer number (864000).

Almost surely, 2^10020815 is an apocalyptic number.

10020815 is a deficient number, since it is larger than the sum of its proper divisors (3803185).

10020815 is a wasteful number, since it uses less digits than its factorization.

10020815 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1702.

The product of its (nonzero) digits is 80, while the sum is 17.

The square root of 10020815 is about 3165.5670897961. The cubic root of 10020815 is about 215.5928472677.

Adding to 10020815 its reverse (51802001), we get a palindrome (61822816).

The spelling of 10020815 in words is "ten million, twenty thousand, eight hundred fifteen".