7521740380 has 48 divisors (see below), whose sum is σ = 19693287936. Its totient is φ = 2344438080.

The previous prime is 7521740341. The next prime is 7521740419. The reversal of 7521740380 is 830471257.

It is an interprime number because it is at equal distance from previous prime (7521740341) and next prime (7521740419).

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, 2440584 + ... + 2443663.

It is an arithmetic number, because the mean of its divisors is an integer number (410276832).

Almost surely, 2^7521740380 is an apocalyptic number.

7521740380 is a gapful number since it is divisible by the number (70) formed by its first and last digit.

It is an amenable number.

7521740380 is an abundant number, since it is smaller than the sum of its proper divisors (12171547556).

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

7521740380 is a wasteful number, since it uses less digits than its factorization.

7521740380 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4884274 (or 4884272 counting only the distinct ones).

The product of its (nonzero) digits is 47040, while the sum is 37.

The square root of 7521740380 is about 86727.9676920888. The cubic root of 7521740380 is about 1959.3233451411.

The spelling of 7521740380 in words is "seven billion, five hundred twenty-one million, seven hundred forty thousand, three hundred eighty".