7155396 has 18 divisors (see below), whose sum is σ = 18087342. Its totient is φ = 2385120.

The previous prime is 7155391. The next prime is 7155397. The reversal of 7155396 is 6935517.

It is a happy number.

7155396 is digitally balanced in base 4, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in only one way, i.e., 4796100 + 2359296 = 2190^2 + 1536^2 .

It is a tau number, because it is divible by the number of its divisors (18).

It is a Harshad number since it is a multiple of its sum of digits (36), and also a Moran number because the ratio is a prime number: 198761 = 7155396 / (7 + 1 + 5 + 5 + 3 + 9 + 6).

It is a self number, because there is not a number n which added to its sum of digits gives 7155396.

It is not an unprimeable number, because it can be changed into a prime (7155391) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 99345 + ... + 99416.

Almost surely, 2^7155396 is an apocalyptic number.

It is an amenable number.

7155396 is an abundant number, since it is smaller than the sum of its proper divisors (10931946).

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

7155396 is a wasteful number, since it uses less digits than its factorization.

7155396 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 198771 (or 198766 counting only the distinct ones).

The product of its digits is 28350, while the sum is 36.

The square root of 7155396 is about 2674.9571959192. The cubic root of 7155396 is about 192.6983035468.

It can be divided in two parts, 7 and 155396, that added together give a triangular number (155403 = T₅₅₇).

The spelling of 7155396 in words is "seven million, one hundred fifty-five thousand, three hundred ninety-six".