7426493478 has 64 divisors (see below), whose sum is σ = 17099596800. Its totient is φ = 2386329120.

The previous prime is 7426493471. The next prime is 7426493479. The reversal of 7426493478 is 8743946247.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (7426493471) 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 31 ways as a sum of consecutive naturals, for example, 1078675 + ... + 1085537.

It is an arithmetic number, because the mean of its divisors is an integer number (267181200).

Almost surely, 2^7426493478 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 7426493478, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (8549798400).

7426493478 is an abundant number, since it is smaller than the sum of its proper divisors (9673103322).

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

7426493478 is a wasteful number, since it uses less digits than its factorization.

7426493478 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7594 (or 7588 counting only the distinct ones).

The product of its digits is 8128512, while the sum is 54.

The square root of 7426493478 is about 86177.1053006540. The cubic root of 7426493478 is about 1951.0179631723.

The spelling of 7426493478 in words is "seven billion, four hundred twenty-six million, four hundred ninety-three thousand, four hundred seventy-eight".