720134100 has 216 divisors, whose sum is σ = 2600194688. Its totient is φ = 163296000.

The previous prime is 720134099. The next prime is 720134101. The reversal of 720134100 is 1431027.

It is an interprime number because it is at equal distance from previous prime (720134099) and next prime (720134101).

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (720134101) by changing a digit.

It is a polite number, since it can be written in 71 ways as a sum of consecutive naturals, for example, 950922 + ... + 951678.

Almost surely, 2^720134100 is an apocalyptic number.

720134100 is a gapful number since it is divisible by the number (70) 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 720134100, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1300097344).

720134100 is an abundant number, since it is smaller than the sum of its proper divisors (1880060588).

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

720134100 is a wasteful number, since it uses less digits than its factorization.

720134100 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 935 (or 925 counting only the distinct ones).

The product of its (nonzero) digits is 168, while the sum is 18.

The square root of 720134100 is about 26835.3144196225. The cubic root of 720134100 is about 896.3365899662.

Adding to 720134100 its reverse (1431027), we get a palindrome (721565127).

The spelling of 720134100 in words is "seven hundred twenty million, one hundred thirty-four thousand, one hundred".