731514420 has 576 divisors, whose sum is σ = 3011613696. Its totient is φ = 139345920.

The previous prime is 731514401. The next prime is 731514449. The reversal of 731514420 is 24415137.

731514420 is a `hidden beast` number, since 73 + 151 + 442 + 0 = 666.

It is a super-2 number, since 2×731514420² = 1070226693335872800, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 191 ways as a sum of consecutive naturals, for example, 10302985 + ... + 10303055.

It is an arithmetic number, because the mean of its divisors is an integer number (5228496).

Almost surely, 2^731514420 is an apocalyptic number.

731514420 is a gapful number since it is divisible by the number (70) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 731514420, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1505806848).

731514420 is an abundant number, since it is smaller than the sum of its proper divisors (2280099276).

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

731514420 is a wasteful number, since it uses less digits than its factorization.

731514420 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 160 (or 155 counting only the distinct ones).

The product of its (nonzero) digits is 3360, while the sum is 27.

The square root of 731514420 is about 27046.5232516122. The cubic root of 731514420 is about 901.0335533613.

Adding to 731514420 its reverse (24415137), we get a palindrome (755929557).

The spelling of 731514420 in words is "seven hundred thirty-one million, five hundred fourteen thousand, four hundred twenty".