731671642 has 24 divisors (see below), whose sum is σ = 1191373920. Its totient is φ = 336857040.

The previous prime is 731671597. The next prime is 731671651. The reversal of 731671642 is 246176137.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 145917 + ... + 150847.

It is an arithmetic number, because the mean of its divisors is an integer number (49640580).

Almost surely, 2^731671642 is an apocalyptic number.

731671642 is a deficient number, since it is larger than the sum of its proper divisors (459702278).

731671642 is a wasteful number, since it uses less digits than its factorization.

731671642 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5398 (or 5385 counting only the distinct ones).

The product of its digits is 42336, while the sum is 37.

The square root of 731671642 is about 27049.4296058161. The cubic root of 731671642 is about 901.0981008014.

The spelling of 731671642 in words is "seven hundred thirty-one million, six hundred seventy-one thousand, six hundred forty-two".