10181620 has 24 divisors (see below), whose sum is σ = 21443688. Its totient is φ = 4060800.

The previous prime is 10181603. The next prime is 10181627. The reversal of 10181620 is 2618101.

It can be written as a sum of positive squares in 4 ways, for example, as 1073296 + 9108324 = 1036^2 + 3018^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (10181627) 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, 10350 + ... + 11290.

It is an arithmetic number, because the mean of its divisors is an integer number (893487).

Almost surely, 2^10181620 is an apocalyptic number.

10181620 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

10181620 is an abundant number, since it is smaller than the sum of its proper divisors (11262068).

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

10181620 is a wasteful number, since it uses less digits than its factorization.

10181620 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1491 (or 1489 counting only the distinct ones).

The product of its (nonzero) digits is 96, while the sum is 19.

The square root of 10181620 is about 3190.8650864617. The cubic root of 10181620 is about 216.7399462847.

Adding to 10181620 its reverse (2618101), we get a palindrome (12799721).

It can be divided in two parts, 10181 and 620, that added together give a palindrome (10801).

The spelling of 10181620 in words is "ten million, one hundred eighty-one thousand, six hundred twenty".