7129764 has 36 divisors (see below), whose sum is σ = 18276076. Its totient is φ = 2343168.

The previous prime is 7129729. The next prime is 7129781. The reversal of 7129764 is 4679217.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 5963364 + 1166400 = 2442^2 + 1080^2 .

It is a tau number, because it is divible by the number of its divisors (36).

It is a Harshad number since it is a multiple of its sum of digits (36).

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 in 11 ways as a sum of consecutive naturals, for example, 1272 + ... + 3984.

Almost surely, 2^7129764 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 7129764, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (9138038).

7129764 is an abundant number, since it is smaller than the sum of its proper divisors (11146312).

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

7129764 is a wasteful number, since it uses less digits than its factorization.

7129764 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2796 (or 2791 counting only the distinct ones).

The product of its digits is 21168, while the sum is 36.

The square root of 7129764 is about 2670.1617928508. The cubic root of 7129764 is about 192.4679341653.

The spelling of 7129764 in words is "seven million, one hundred twenty-nine thousand, seven hundred sixty-four".