109537428 has 144 divisors (see below), whose sum is σ = 346183040. Its totient is φ = 26231040.

The previous prime is 109537423. The next prime is 109537433. The reversal of 109537428 is 824735901.

It is an interprime number because it is at equal distance from previous prime (109537423) and next prime (109537433).

It is a Harshad number since it is a multiple of its sum of digits (39).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (109537423) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 131718 + ... + 132546.

Almost surely, 2^109537428 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 109537428, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (173091520).

109537428 is an abundant number, since it is smaller than the sum of its proper divisors (236645612).

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

109537428 is a wasteful number, since it uses less digits than its factorization.

109537428 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 878 (or 865 counting only the distinct ones).

The product of its (nonzero) digits is 60480, while the sum is 39.

The square root of 109537428 is about 10466.0129944502. The cubic root of 109537428 is about 478.4694127627.

It can be divided in two parts, 10953 and 7428, that added together give a palindrome (18381).

The spelling of 109537428 in words is "one hundred nine million, five hundred thirty-seven thousand, four hundred twenty-eight".