83047988 has 6 divisors (see below), whose sum is σ = 145333986. Its totient is φ = 41523992.

The previous prime is 83047969. The next prime is 83047997. The reversal of 83047988 is 88974038.

It can be written as a sum of positive squares in only one way, i.e., 65642404 + 17405584 = 8102^2 + 4172^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10380995 + ... + 10381002.

It is an arithmetic number, because the mean of its divisors is an integer number (24222331).

Almost surely, 2^83047988 is an apocalyptic number.

It is an amenable number.

83047988 is a deficient number, since it is larger than the sum of its proper divisors (62285998).

83047988 is a wasteful number, since it uses less digits than its factorization.

83047988 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20762001 (or 20761999 counting only the distinct ones).

The product of its (nonzero) digits is 387072, while the sum is 47.

The square root of 83047988 is about 9113.0668822302. The cubic root of 83047988 is about 436.2911180363.

The spelling of 83047988 in words is "eighty-three million, forty-seven thousand, nine hundred eighty-eight".