7428737 has 2 divisors, whose sum is σ = 7428738. Its totient is φ = 7428736.

The previous prime is 7428731. The next prime is 7428761. The reversal of 7428737 is 7378247.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 6355441 + 1073296 = 2521^2 + 1036^2 .

It is a cyclic number.

It is not a de Polignac number, because 7428737 - 2¹⁶ = 7363201 is a prime.

It is a super-2 number, since 2×7428737² = 110372266830338, which contains 22 as substring.

It is a Chen prime.

It is an Ulam number.

It is a self number, because there is not a number n which added to its sum of digits gives 7428737.

It is not a weakly prime, because it can be changed into another prime (7428731) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3714368 + 3714369.

It is an arithmetic number, because the mean of its divisors is an integer number (3714369).

Almost surely, 2^7428737 is an apocalyptic number.

It is an amenable number.

7428737 is a deficient number, since it is larger than the sum of its proper divisors (1).

7428737 is an equidigital number, since it uses as much as digits as its factorization.

7428737 is an evil number, because the sum of its binary digits is even.

The product of its digits is 65856, while the sum is 38.

The square root of 7428737 is about 2725.5709493609. The cubic root of 7428737 is about 195.1214409002.

The spelling of 7428737 in words is "seven million, four hundred twenty-eight thousand, seven hundred thirty-seven".