100720070 has 32 divisors (see below), whose sum is σ = 209415456. Its totient is φ = 34470400.

The previous prime is 100720049. The next prime is 100720133. The reversal of 100720070 is 70027001.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (17).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 25061 + ... + 28800.

It is an arithmetic number, because the mean of its divisors is an integer number (6544233).

Almost surely, 2^100720070 is an apocalyptic number.

100720070 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

100720070 is an abundant number, since it is smaller than the sum of its proper divisors (108695386).

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

100720070 is a wasteful number, since it uses less digits than its factorization.

100720070 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 53896.

The product of its (nonzero) digits is 98, while the sum is 17.

The square root of 100720070 is about 10035.9389197025. The cubic root of 100720070 is about 465.2703095563.

Adding to 100720070 its reverse (70027001), we get a palindrome (170747071).

The spelling of 100720070 in words is "one hundred million, seven hundred twenty thousand, seventy".