7200740409 has 8 divisors (see below), whose sum is σ = 9736212672. Its totient is φ = 4732880880.

The previous prime is 7200740401. The next prime is 7200740411. The reversal of 7200740409 is 9040470027.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 7200740409 - 2³ = 7200740401 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 7200740409.

It is not an unprimeable number, because it can be changed into a prime (7200740401) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 16902934 + ... + 16903359.

It is an arithmetic number, because the mean of its divisors is an integer number (1217026584).

Almost surely, 2^7200740409 is an apocalyptic number.

It is an amenable number.

7200740409 is a deficient number, since it is larger than the sum of its proper divisors (2535472263).

7200740409 is a wasteful number, since it uses less digits than its factorization.

7200740409 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 33806367.

The product of its (nonzero) digits is 14112, while the sum is 33.

The square root of 7200740409 is about 84857.1765321001. The cubic root of 7200740409 is about 1931.0449574082.

The spelling of 7200740409 in words is "seven billion, two hundred million, seven hundred forty thousand, four hundred nine".