731836 has 24 divisors (see below), whose sum is σ = 1491840. Its totient is φ = 307632.

The previous prime is 731831. The next prime is 731839. The reversal of 731836 is 638137.

It is a Harshad number since it is a multiple of its sum of digits (28).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (731831) by changing a digit.

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 in 7 ways as a sum of consecutive naturals, for example, 1431 + ... + 1873.

It is an arithmetic number, because the mean of its divisors is an integer number (62160).

2⁷³¹⁸³⁶ is an apocalyptic number.

It is an amenable number.

731836 is an abundant number, since it is smaller than the sum of its proper divisors (760004).

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

731836 is a wasteful number, since it uses less digits than its factorization.

731836 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 513 (or 511 counting only the distinct ones).

The product of its digits is 3024, while the sum is 28.

The square root of 731836 is about 855.4741375401. The cubic root of 731836 is about 90.1165568039.

It can be divided in two parts, 731 and 836, that multiplied together give a palindrome (611116).

The spelling of 731836 in words is "seven hundred thirty-one thousand, eight hundred thirty-six".