7131489928 has 32 divisors (see below), whose sum is σ = 13503605760. Its totient is φ = 3530640960.

The previous prime is 7131489923. The next prime is 7131489941. The reversal of 7131489928 is 8299841317.

It is not an unprimeable number, because it can be changed into a prime (7131489923) 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, 524658 + ... + 538078.

It is an arithmetic number, because the mean of its divisors is an integer number (421987680).

Almost surely, 2^7131489928 is an apocalyptic number.

It is an amenable number.

7131489928 is a deficient number, since it is larger than the sum of its proper divisors (6372115832).

7131489928 is a wasteful number, since it uses less digits than its factorization.

7131489928 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14077 (or 14073 counting only the distinct ones).

The product of its digits is 870912, while the sum is 52.

The square root of 7131489928 is about 84448.1493462113. The cubic root of 7131489928 is about 1924.8346338410.

The spelling of 7131489928 in words is "seven billion, one hundred thirty-one million, four hundred eighty-nine thousand, nine hundred twenty-eight".