7428227493 has 16 divisors (see below), whose sum is σ = 10078231680. Its totient is φ = 4865704704.

The previous prime is 7428227491. The next prime is 7428227531. The reversal of 7428227493 is 3947228247.

It is not a de Polignac number, because 7428227493 - 2¹ = 7428227491 is a prime.

It is a super-2 number, since 2×7428227493² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (7428227491) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 6888 + ... + 122081.

It is an arithmetic number, because the mean of its divisors is an integer number (629889480).

Almost surely, 2^7428227493 is an apocalyptic number.

7428227493 is a gapful number since it is divisible by the number (73) formed by its first and last digit.

It is an amenable number.

7428227493 is a deficient number, since it is larger than the sum of its proper divisors (2650004187).

7428227493 is a wasteful number, since it uses less digits than its factorization.

7428227493 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 129308.

The product of its digits is 1354752, while the sum is 48.

The square root of 7428227493 is about 86187.1654772333. The cubic root of 7428227493 is about 1951.1697993496.

The spelling of 7428227493 in words is "seven billion, four hundred twenty-eight million, two hundred twenty-seven thousand, four hundred ninety-three".