10021004 has 24 divisors (see below), whose sum is σ = 20123040. Its totient is φ = 4277376.

The previous prime is 10021003. The next prime is 10021027. The reversal of 10021004 is 40012001.

It is a super-3 number, since 3×10021004³ (a number of 22 digits) contains 333 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 10020982 and 10021000.

It is not an unprimeable number, because it can be changed into a prime (10021001) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 8312 + ... + 9440.

It is an arithmetic number, because the mean of its divisors is an integer number (838460).

Almost surely, 2^10021004 is an apocalyptic number.

10021004 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

It is an amenable number.

10021004 is an abundant number, since it is smaller than the sum of its proper divisors (10102036).

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

10021004 is a wasteful number, since it uses less digits than its factorization.

10021004 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1457 (or 1455 counting only the distinct ones).

The product of its (nonzero) digits is 8, while the sum is 8.

The square root of 10021004 is about 3165.5969421264. The cubic root of 10021004 is about 215.5942026728.

Adding to 10021004 its reverse (40012001), we get a palindrome (50033005).

The spelling of 10021004 in words is "ten million, twenty-one thousand, four".