7228257750 has 160 divisors (see below), whose sum is σ = 23101505856. Its totient is φ = 1652140800.

The previous prime is 7228257749. The next prime is 7228257763. The reversal of 7228257750 is 577528227.

7228257750 is a `hidden beast` number, since 7 + 2 + 28 + 2 + 577 + 50 = 666.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 7228257696 and 7228257705.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 79 ways as a sum of consecutive naturals, for example, 116254 + ... + 167246.

Almost surely, 2^7228257750 is an apocalyptic number.

7228257750 is a gapful number since it is divisible by the number (70) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 7228257750, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (11550752928).

7228257750 is an abundant number, since it is smaller than the sum of its proper divisors (15873248106).

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

7228257750 is a wasteful number, since it uses less digits than its factorization.

7228257750 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 51029 (or 51010 counting only the distinct ones).

The product of its (nonzero) digits is 548800, while the sum is 45.

The square root of 7228257750 is about 85019.1610756070. The cubic root of 7228257750 is about 1933.5016343445.

The spelling of 7228257750 in words is "seven billion, two hundred twenty-eight million, two hundred fifty-seven thousand, seven hundred fifty".