7128974 has 4 divisors (see below), whose sum is σ = 10693464. Its totient is φ = 3564486.

The previous prime is 7128973. The next prime is 7128991. The reversal of 7128974 is 4798217.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 4798217 = 73 ⋅65729.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (7128973) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1782242 + ... + 1782245.

It is an arithmetic number, because the mean of its divisors is an integer number (2673366).

Almost surely, 2^7128974 is an apocalyptic number.

7128974 is a deficient number, since it is larger than the sum of its proper divisors (3564490).

7128974 is a wasteful number, since it uses less digits than its factorization.

7128974 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3564489.

The product of its digits is 28224, while the sum is 38.

The square root of 7128974 is about 2670.0138576419. The cubic root of 7128974 is about 192.4608252210.

The spelling of 7128974 in words is "seven million, one hundred twenty-eight thousand, nine hundred seventy-four".