10021572 has 36 divisors (see below), whose sum is σ = 27636336. Its totient is φ = 3036720.

The previous prime is 10021567. The next prime is 10021597. The reversal of 10021572 is 27512001.

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

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a nialpdrome in base 6.

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 in 11 ways as a sum of consecutive naturals, for example, 12258 + ... + 13049.

It is an arithmetic number, because the mean of its divisors is an integer number (767676).

Almost surely, 2^10021572 is an apocalyptic number.

10021572 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

10021572 is an abundant number, since it is smaller than the sum of its proper divisors (17614764).

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

10021572 is a wasteful number, since it uses less digits than its factorization.

10021572 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25328 (or 25323 counting only the distinct ones).

The product of its (nonzero) digits is 140, while the sum is 18.

The square root of 10021572 is about 3165.6866553719. The cubic root of 10021572 is about 215.5982759571.

Adding to 10021572 its reverse (27512001), we get a palindrome (37533573).

The spelling of 10021572 in words is "ten million, twenty-one thousand, five hundred seventy-two".