7149216 has 24 divisors (see below), whose sum is σ = 18766944. Its totient is φ = 2383040.

The previous prime is 7149209. The next prime is 7149221. The reversal of 7149216 is 6129417.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (24).

It is a super-2 number, since 2×7149216² = 102222578829312, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 37140 + ... + 37331.

It is an arithmetic number, because the mean of its divisors is an integer number (781956).

Almost surely, 2^7149216 is an apocalyptic number.

It is an amenable number.

7149216 is an abundant number, since it is smaller than the sum of its proper divisors (11617728).

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

7149216 is a wasteful number, since it uses less digits than its factorization.

7149216 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 74484 (or 74476 counting only the distinct ones).

The product of its digits is 3024, while the sum is 30.

The square root of 7149216 is about 2673.8017877173. The cubic root of 7149216 is about 192.6428107631.

The spelling of 7149216 in words is "seven million, one hundred forty-nine thousand, two hundred sixteen".