109724940 has 108 divisors (see below), whose sum is σ = 360504144. Its totient is φ = 27001728.

The previous prime is 109724933. The next prime is 109724947. The reversal of 109724940 is 49427901.

It is an interprime number because it is at equal distance from previous prime (109724933) and next prime (109724947).

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a junction number, because it is equal to n+sod(n) for n = 109724895 and 109724904.

It is not an unprimeable number, because it can be changed into a prime (109724947) by changing a digit.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 28617 + ... + 32223.

Almost surely, 2^109724940 is an apocalyptic number.

109724940 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 109724940, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (180252072).

109724940 is an abundant number, since it is smaller than the sum of its proper divisors (250779204).

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

109724940 is a wasteful number, since it uses less digits than its factorization.

109724940 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3648 (or 3630 counting only the distinct ones).

The product of its (nonzero) digits is 18144, while the sum is 36.

The square root of 109724940 is about 10474.9673030516. The cubic root of 109724940 is about 478.7422802556.

The spelling of 109724940 in words is "one hundred nine million, seven hundred twenty-four thousand, nine hundred forty".