109213620 has 96 divisors (see below), whose sum is σ = 320495616. Its totient is φ = 27753600.

The previous prime is 109213613. The next prime is 109213631. The reversal of 109213620 is 26312901.

It is a super-2 number, since 2×109213620² = 23855229587008800, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 131647 + ... + 132473.

It is an arithmetic number, because the mean of its divisors is an integer number (3338496).

Almost surely, 2^109213620 is an apocalyptic number.

109213620 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 109213620, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (160247808).

109213620 is an abundant number, since it is smaller than the sum of its proper divisors (211281996).

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

109213620 is a wasteful number, since it uses less digits than its factorization.

109213620 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 941 (or 939 counting only the distinct ones).

The product of its (nonzero) digits is 648, while the sum is 24.

The square root of 109213620 is about 10450.5320438722. The cubic root of 109213620 is about 477.9974731868.

It can be divided in two parts, 10921 and 3620, that added together give a palindrome (14541).

The spelling of 109213620 in words is "one hundred nine million, two hundred thirteen thousand, six hundred twenty".