7291228405 has 8 divisors (see below), whose sum is σ = 8750115000. Its totient is φ = 5832555456.

The previous prime is 7291228363. The next prime is 7291228409. The reversal of 7291228405 is 5048221927.

It can be written as a sum of positive squares in 4 ways, for example, as 869129361 + 6422099044 = 29481^2 + 80138^2 .

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

It is a cyclic number.

It is not a de Polignac number, because 7291228405 - 2¹³ = 7291220213 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (7291228409) 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, 34971 + ... + 125719.

It is an arithmetic number, because the mean of its divisors is an integer number (1093764375).

Almost surely, 2^7291228405 is an apocalyptic number.

It is an amenable number.

7291228405 is a deficient number, since it is larger than the sum of its proper divisors (1458886595).

7291228405 is a wasteful number, since it uses less digits than its factorization.

7291228405 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 106823.

The product of its (nonzero) digits is 80640, while the sum is 40.

The square root of 7291228405 is about 85388.6901468807. The cubic root of 7291228405 is about 1939.1001251319.

The spelling of 7291228405 in words is "seven billion, two hundred ninety-one million, two hundred twenty-eight thousand, four hundred five".