731986842 has 8 divisors (see below), whose sum is σ = 1463973696. Its totient is φ = 243995612.

The previous prime is 731986831. The next prime is 731986889. The reversal of 731986842 is 248689137.

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

731986842 is an admirable number.

It is a super-2 number, since 2×731986842² = 1071609473722265928, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 731986791 and 731986800.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 60998898 + ... + 60998909.

It is an arithmetic number, because the mean of its divisors is an integer number (182996712).

Almost surely, 2^731986842 is an apocalyptic number.

731986842 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

731986842 is a wasteful number, since it uses less digits than its factorization.

731986842 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 121997812.

The product of its digits is 580608, while the sum is 48.

The square root of 731986842 is about 27055.2553490075. The cubic root of 731986842 is about 901.2274782112.

The spelling of 731986842 in words is "seven hundred thirty-one million, nine hundred eighty-six thousand, eight hundred forty-two".