720041400 has 360 divisors, whose sum is σ = 2718274680. Its totient is φ = 176567040.

The previous prime is 720041393. The next prime is 720041437. The reversal of 720041400 is 4140027.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (360).

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

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 89 ways as a sum of consecutive naturals, for example, 2737669 + ... + 2737931.

It is an arithmetic number, because the mean of its divisors is an integer number (7550763).

Almost surely, 2^720041400 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 720041400, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1359137340).

720041400 is an abundant number, since it is smaller than the sum of its proper divisors (1998233280).

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

720041400 is a wasteful number, since it uses less digits than its factorization.

720041400 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 317 (or 286 counting only the distinct ones).

The product of its (nonzero) digits is 224, while the sum is 18.

The square root of 720041400 is about 26833.5871623605. The cubic root of 720041400 is about 896.2981277004.

Adding to 720041400 its reverse (4140027), we get a palindrome (724181427).

The spelling of 720041400 in words is "seven hundred twenty million, forty-one thousand, four hundred".