7151920 has 20 divisors (see below), whose sum is σ = 16628400. Its totient is φ = 2860736.

The previous prime is 7151909. The next prime is 7151927. The reversal of 7151920 is 291517.

It is a tau number, because it is divible by the number of its divisors (20).

It is a super-2 number, since 2×7151920² = 102299919372800, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (7151927) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 44620 + ... + 44779.

It is an arithmetic number, because the mean of its divisors is an integer number (831420).

Almost surely, 2^7151920 is an apocalyptic number.

It is an amenable number.

7151920 is an abundant number, since it is smaller than the sum of its proper divisors (9476480).

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

7151920 is a wasteful number, since it uses less digits than its factorization.

7151920 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 89412 (or 89406 counting only the distinct ones).

The product of its (nonzero) digits is 630, while the sum is 25.

The square root of 7151920 is about 2674.3073869696. The cubic root of 7151920 is about 192.6670950344.

The spelling of 7151920 in words is "seven million, one hundred fifty-one thousand, nine hundred twenty".