100545720 has 192 divisors, whose sum is σ = 348935040. Its totient is φ = 22982400.

The previous prime is 100545713. The next prime is 100545721. The reversal of 100545720 is 27545001.

It is a Harshad number since it is a multiple of its sum of digits (24).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (100545721) 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, 476415 + ... + 476625.

It is an arithmetic number, because the mean of its divisors is an integer number (1817370).

Almost surely, 2^100545720 is an apocalyptic number.

100545720 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 100545720, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (174467520).

100545720 is an abundant number, since it is smaller than the sum of its proper divisors (248389320).

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

100545720 is a wasteful number, since it uses less digits than its factorization.

100545720 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 274 (or 251 counting only the distinct ones).

The product of its (nonzero) digits is 1400, while the sum is 24.

The square root of 100545720 is about 10027.2488749407. The cubic root of 100545720 is about 465.0016880503.

The spelling of 100545720 in words is "one hundred million, five hundred forty-five thousand, seven hundred twenty".