7257135380 has 48 divisors (see below), whose sum is σ = 16752415680. Its totient is φ = 2618803200.

The previous prime is 7257135359. The next prime is 7257135397. The reversal of 7257135380 is 835317527.

It is a Smith number, since the sum of its digits (41) coincides with the sum of the digits of its prime factors.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 97085 + ... + 154724.

It is an arithmetic number, because the mean of its divisors is an integer number (349008660).

Almost surely, 2^7257135380 is an apocalyptic number.

It is an amenable number.

7257135380 is an abundant number, since it is smaller than the sum of its proper divisors (9495280300).

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

7257135380 is a wasteful number, since it uses less digits than its factorization.

7257135380 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 251960 (or 251958 counting only the distinct ones).

The product of its (nonzero) digits is 176400, while the sum is 41.

The square root of 7257135380 is about 85188.8219193105. The cubic root of 7257135380 is about 1936.0730586942.

The spelling of 7257135380 in words is "seven billion, two hundred fifty-seven million, one hundred thirty-five thousand, three hundred eighty".