720238100 has 36 divisors (see below), whose sum is σ = 1630874784. Its totient is φ = 275568480.

The previous prime is 720238093. The next prime is 720238121. The reversal of 720238100 is 1832027.

It is a super-2 number, since 2×720238100² = 1037485841383220000, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (23).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 154274 + ... + 158873.

Almost surely, 2^720238100 is an apocalyptic number.

It is an amenable number.

720238100 is an abundant number, since it is smaller than the sum of its proper divisors (910636684).

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

720238100 is a wasteful number, since it uses less digits than its factorization.

720238100 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 313184 (or 313177 counting only the distinct ones).

The product of its (nonzero) digits is 672, while the sum is 23.

The square root of 720238100 is about 26837.2520948029. The cubic root of 720238100 is about 896.3797367996.

The spelling of 720238100 in words is "seven hundred twenty million, two hundred thirty-eight thousand, one hundred".