7148772 has 36 divisors (see below), whose sum is σ = 19135116. Its totient is φ = 2242560.

The previous prime is 7148759. The next prime is 7148809. The reversal of 7148772 is 2778417.

It can be written as a sum of positive squares in 2 ways, for example, as 4639716 + 2509056 = 2154^2 + 1584^2 .

It is a tau number, because it is divible by the number of its divisors (36).

It is a super-2 number, since 2×7148772² = 102209882215968, which contains 22 as substring.

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

It is an unprimeable number.

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, 5229 + ... + 6452.

It is an arithmetic number, because the mean of its divisors is an integer number (531531).

Almost surely, 2^7148772 is an apocalyptic number.

It is an amenable number.

7148772 is an abundant number, since it is smaller than the sum of its proper divisors (11986344).

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

7148772 is a wasteful number, since it uses less digits than its factorization.

7148772 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11708 (or 11703 counting only the distinct ones).

The product of its digits is 21952, while the sum is 36.

The square root of 7148772 is about 2673.7187585833. The cubic root of 7148772 is about 192.6388226718.

The spelling of 7148772 in words is "seven million, one hundred forty-eight thousand, seven hundred seventy-two".