7129944 has 40 divisors (see below), whose sum is σ = 19972260. Its totient is φ = 2376432.

The previous prime is 7129877. The next prime is 7130003. The reversal of 7129944 is 4499217.

7129944 is digitally balanced in base 4, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×7129944² = 101672202886272, which contains 22 as substring.

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

It is a junction number, because it is equal to n+sod(n) for n = 7129899 and 7129908.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 4854 + ... + 6149.

Almost surely, 2^7129944 is an apocalyptic number.

It is an amenable number.

7129944 is an abundant number, since it is smaller than the sum of its proper divisors (12842316).

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

7129944 is a wasteful number, since it uses less digits than its factorization.

7129944 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11021 (or 11008 counting only the distinct ones).

The product of its digits is 18144, while the sum is 36.

The square root of 7129944 is about 2670.1954984607. The cubic root of 7129944 is about 192.4695538513.

The spelling of 7129944 in words is "seven million, one hundred twenty-nine thousand, nine hundred forty-four".