100720484 has 6 divisors (see below), whose sum is σ = 176260854. Its totient is φ = 50360240.

The previous prime is 100720481. The next prime is 100720513. The reversal of 100720484 is 484027001.

It can be written as a sum of positive squares in only one way, i.e., 58859584 + 41860900 = 7672^2 + 6470^2 .

It is not an unprimeable number, because it can be changed into a prime (100720481) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 12590057 + ... + 12590064.

It is an arithmetic number, because the mean of its divisors is an integer number (29376809).

Almost surely, 2^100720484 is an apocalyptic number.

It is an amenable number.

100720484 is a deficient number, since it is larger than the sum of its proper divisors (75540370).

100720484 is a wasteful number, since it uses less digits than its factorization.

100720484 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25180125 (or 25180123 counting only the distinct ones).

The product of its (nonzero) digits is 1792, while the sum is 26.

The square root of 100720484 is about 10035.9595455542. The cubic root of 100720484 is about 465.2709470381.

Adding to 100720484 its reverse (484027001), we get a palindrome (584747485).

The spelling of 100720484 in words is "one hundred million, seven hundred twenty thousand, four hundred eighty-four".