731949136 has 10 divisors (see below), whose sum is σ = 1418151482. Its totient is φ = 365974560.

The previous prime is 731949077. The next prime is 731949149. The reversal of 731949136 is 631949137.

It can be written as a sum of positive squares in only one way, i.e., 612265536 + 119683600 = 24744^2 + 10940^2 .

It is a super-2 number, since 2×731949136² = 1071499075382292992, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 731949092 and 731949101.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 22873395 + ... + 22873426.

Almost surely, 2^731949136 is an apocalyptic number.

It is an amenable number.

731949136 is a deficient number, since it is larger than the sum of its proper divisors (686202346).

731949136 is a wasteful number, since it uses less digits than its factorization.

731949136 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 45746829 (or 45746823 counting only the distinct ones).

The product of its digits is 122472, while the sum is 43.

The square root of 731949136 is about 27054.5585068395. The cubic root of 731949136 is about 901.2120033124.

Subtracting from 731949136 its reverse (631949137), we obtain a palindrome (99999999).

The spelling of 731949136 in words is "seven hundred thirty-one million, nine hundred forty-nine thousand, one hundred thirty-six".