7265991900 has 36 divisors (see below), whose sum is σ = 21022937432. Its totient is φ = 1937597760.

The previous prime is 7265991877. The next prime is 7265991907. The reversal of 7265991900 is 91995627.

It is a super-2 number, since 2×7265991900² (a number of 21 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 7265991900.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (7265991907) by changing a digit.

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, 12109687 + ... + 12110286.

Almost surely, 2^7265991900 is an apocalyptic number.

It is an amenable number.

7265991900 is an abundant number, since it is smaller than the sum of its proper divisors (13756945532).

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

7265991900 is a wasteful number, since it uses less digits than its factorization.

7265991900 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 24219990 (or 24219983 counting only the distinct ones).

The product of its (nonzero) digits is 306180, while the sum is 48.

The square root of 7265991900 is about 85240.7877720519. The cubic root of 7265991900 is about 1936.8603252173.

The spelling of 7265991900 in words is "seven billion, two hundred sixty-five million, nine hundred ninety-one thousand, nine hundred".