720742000 has 120 divisors (see below), whose sum is σ = 1911748176. Its totient is φ = 260640000.

The previous prime is 720741997. The next prime is 720742003. The reversal of 720742000 is 247027.

It is an interprime number because it is at equal distance from previous prime (720741997) and next prime (720742003).

It is a Harshad number since it is a multiple of its sum of digits (22).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (720742003) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 3981910 + ... + 3982090.

Almost surely, 2^720742000 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 720742000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (955874088).

720742000 is an abundant number, since it is smaller than the sum of its proper divisors (1191006176).

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

720742000 is a wasteful number, since it uses less digits than its factorization.

720742000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 396 (or 199 counting only the distinct ones).

The product of its (nonzero) digits is 784, while the sum is 22.

The square root of 720742000 is about 26846.6385232863. The cubic root of 720742000 is about 896.5887327102.

Adding to 720742000 its reverse (247027), we get a palindrome (720989027).

The spelling of 720742000 in words is "seven hundred twenty million, seven hundred forty-two thousand".