740721500 has 48 divisors (see below), whose sum is σ = 1661499840. Its totient is φ = 288273600.

The previous prime is 740721491. The next prime is 740721503. The reversal of 740721500 is 5127047.

It is a self number, because there is not a number n which added to its sum of digits gives 740721500.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (740721503) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1520 + ... + 38519.

It is an arithmetic number, because the mean of its divisors is an integer number (34614580).

Almost surely, 2^740721500 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 740721500, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (830749920).

740721500 is an abundant number, since it is smaller than the sum of its proper divisors (920778340).

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

740721500 is a wasteful number, since it uses less digits than its factorization.

740721500 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 40095 (or 40083 counting only the distinct ones).

The product of its (nonzero) digits is 1960, while the sum is 26.

The square root of 740721500 is about 27216.1992203173. The cubic root of 740721500 is about 904.7980380196.

Adding to 740721500 its reverse (5127047), we get a palindrome (745848547).

The spelling of 740721500 in words is "seven hundred forty million, seven hundred twenty-one thousand, five hundred".