10321620 has 24 divisors (see below), whose sum is σ = 28900704. Its totient is φ = 2752416.

The previous prime is 10321607. The next prime is 10321639. The reversal of 10321620 is 2612301.

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

It is a self number, because there is not a number n which added to its sum of digits gives 10321620.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 85954 + ... + 86073.

It is an arithmetic number, because the mean of its divisors is an integer number (1204196).

Almost surely, 2^10321620 is an apocalyptic number.

10321620 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

10321620 is an abundant number, since it is smaller than the sum of its proper divisors (18579084).

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

10321620 is a wasteful number, since it uses less digits than its factorization.

10321620 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 172039 (or 172037 counting only the distinct ones).

The product of its (nonzero) digits is 72, while the sum is 15.

The square root of 10321620 is about 3212.7278129340. The cubic root of 10321620 is about 217.7288382865.

Adding to 10321620 its reverse (2612301), we get a palindrome (12933921).

The spelling of 10321620 in words is "ten million, three hundred twenty-one thousand, six hundred twenty".