7426221040 has 80 divisors (see below), whose sum is σ = 20027146752. Its totient is φ = 2508118272.

The previous prime is 7426221037. The next prime is 7426221053. The reversal of 7426221040 is 401226247.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (80).

It is a Harshad number since it is a multiple of its sum of digits (28).

It is a congruent number.

It is an unprimeable number.

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 15 ways as a sum of consecutive naturals, for example, 61444 + ... + 136483.

Almost surely, 2^7426221040 is an apocalyptic number.

7426221040 is a gapful number since it is divisible by the number (70) formed by its first and last digit.

It is an amenable number.

7426221040 is an abundant number, since it is smaller than the sum of its proper divisors (12600925712).

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

7426221040 is a wasteful number, since it uses less digits than its factorization.

7426221040 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 198014 (or 198008 counting only the distinct ones).

The product of its (nonzero) digits is 5376, while the sum is 28.

The square root of 7426221040 is about 86175.5245995056. The cubic root of 7426221040 is about 1950.9941054377.

Adding to 7426221040 its reverse (401226247), we get a palindrome (7827447287).

The spelling of 7426221040 in words is "seven billion, four hundred twenty-six million, two hundred twenty-one thousand, forty".