7148728 has 8 divisors (see below), whose sum is σ = 13403880. Its totient is φ = 3574360.

The previous prime is 7148717. The next prime is 7148737. The reversal of 7148728 is 8278417.

It is a tau number, because it is divible by the number of its divisors (8).

It is a super-2 number, since 2×7148728² = 102208624035968, which contains 22 as substring.

It is a hoax number, since the sum of its digits (37) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

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 as a sum of consecutive naturals, namely, 446788 + ... + 446803.

It is an arithmetic number, because the mean of its divisors is an integer number (1675485).

Almost surely, 2^7148728 is an apocalyptic number.

It is an amenable number.

7148728 is a deficient number, since it is larger than the sum of its proper divisors (6255152).

7148728 is a wasteful number, since it uses less digits than its factorization.

7148728 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 893597 (or 893593 counting only the distinct ones).

The product of its digits is 25088, while the sum is 37.

The square root of 7148728 is about 2673.7105303305. The cubic root of 7148728 is about 192.6384274466.

The spelling of 7148728 in words is "seven million, one hundred forty-eight thousand, seven hundred twenty-eight".