7121376 has 72 divisors (see below), whose sum is σ = 20573280. Its totient is φ = 2336256.

The previous prime is 7121357. The next prime is 7121377. The reversal of 7121376 is 6731217.

It is a tau number, because it is divible by the number of its divisors (72).

It is a super-2 number, since 2×7121376² = 101427992266752, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (7121377) 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 11 ways as a sum of consecutive naturals, for example, 22596 + ... + 22908.

It is an arithmetic number, because the mean of its divisors is an integer number (285740).

Almost surely, 2^7121376 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 7121376, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (10286640).

7121376 is an abundant number, since it is smaller than the sum of its proper divisors (13451904).

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

7121376 is a wasteful number, since it uses less digits than its factorization.

7121376 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 408 (or 397 counting only the distinct ones).

The product of its digits is 1764, while the sum is 27.

The square root of 7121376 is about 2668.5906392701. The cubic root of 7121376 is about 192.3924265442.

It can be divided in two parts, 71213 and 76, that added together give a square (71289 = 267²).

The spelling of 7121376 in words is "seven million, one hundred twenty-one thousand, three hundred seventy-six".