10021650 has 48 divisors (see below), whose sum is σ = 25230528. Its totient is φ = 2632000.

The previous prime is 10021639. The next prime is 10021663. The reversal of 10021650 is 5612001.

It is a Harshad number since it is a multiple of its sum of digits (15).

It is a nialpdrome in base 6.

It is a congruent number.

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 23 ways as a sum of consecutive naturals, for example, 10180 + ... + 11120.

It is an arithmetic number, because the mean of its divisors is an integer number (525636).

Almost surely, 2^10021650 is an apocalyptic number.

10021650 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 10021650, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (12615264).

10021650 is an abundant number, since it is smaller than the sum of its proper divisors (15208878).

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

10021650 is a wasteful number, since it uses less digits than its factorization.

10021650 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1027 (or 1022 counting only the distinct ones).

The product of its (nonzero) digits is 60, while the sum is 15.

The square root of 10021650 is about 3165.6989749501. The cubic root of 10021650 is about 215.5988353045.

Adding to 10021650 its reverse (5612001), we get a palindrome (15633651).

The spelling of 10021650 in words is "ten million, twenty-one thousand, six hundred fifty".