7450729 has 8 divisors (see below), whose sum is σ = 8753472. Its totient is φ = 6252240.

The previous prime is 7450721. The next prime is 7450747. The reversal of 7450729 is 9270547.

7450729 = 818² + 819² + ... + 828².

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

It is a cyclic number.

It is not a de Polignac number, because 7450729 - 2³ = 7450721 is a prime.

It is an alternating number because its digits alternate between odd and even.

It is a junction number, because it is equal to n+sod(n) for n = 7450694 and 7450703.

It is not an unprimeable number, because it can be changed into a prime (7450721) 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, 25909 + ... + 26194.

It is an arithmetic number, because the mean of its divisors is an integer number (1094184).

Almost surely, 2^7450729 is an apocalyptic number.

It is an amenable number.

7450729 is a deficient number, since it is larger than the sum of its proper divisors (1302743).

7450729 is a wasteful number, since it uses less digits than its factorization.

7450729 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 52127.

The product of its (nonzero) digits is 17640, while the sum is 34.

The square root of 7450729 is about 2729.6023519920. The cubic root of 7450729 is about 195.3137967573.

The spelling of 7450729 in words is "seven million, four hundred fifty thousand, seven hundred twenty-nine".