7248881987 has 8 divisors (see below), whose sum is σ = 7321622352. Its totient is φ = 7176405600.

The previous prime is 7248881971. The next prime is 7248881989. The reversal of 7248881987 is 7891888427.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 7248881987 - 2⁴ = 7248881971 is a prime.

It is a super-2 number, since 2×7248881987² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (7248881989) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 10568 + ... + 120869.

It is an arithmetic number, because the mean of its divisors is an integer number (915202794).

Almost surely, 2^7248881987 is an apocalyptic number.

7248881987 is a deficient number, since it is larger than the sum of its proper divisors (72740365).

7248881987 is a wasteful number, since it uses less digits than its factorization.

7248881987 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 131989.

The product of its digits is 14450688, while the sum is 62.

The square root of 7248881987 is about 85140.3663781170. The cubic root of 7248881987 is about 1935.3388280638.

The spelling of 7248881987 in words is "seven billion, two hundred forty-eight million, eight hundred eighty-one thousand, nine hundred eighty-seven".