7627428 has 18 divisors (see below), whose sum is σ = 19280534. Its totient is φ = 2542464.

The previous prime is 7627423. The next prime is 7627429. The reversal of 7627428 is 8247267.

7627428 is a `hidden beast` number, since 7 + 627 + 4 + 28 = 666.

It can be written as a sum of positive squares in only one way, i.e., 7354944 + 272484 = 2712^2 + 522^2 .

It is a tau number, because it is divible by the number of its divisors (18).

It is a Harshad number since it is a multiple of its sum of digits (36), and also a Moran number because the ratio is a prime number: 211873 = 7627428 / (7 + 6 + 2 + 7 + 4 + 2 + 8).

It is a junction number, because it is equal to n+sod(n) for n = 7627392 and 7627401.

It is not an unprimeable number, because it can be changed into a prime (7627423) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 105901 + ... + 105972.

Almost surely, 2^7627428 is an apocalyptic number.

It is an amenable number.

7627428 is an abundant number, since it is smaller than the sum of its proper divisors (11653106).

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

7627428 is a wasteful number, since it uses less digits than its factorization.

7627428 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 211883 (or 211878 counting only the distinct ones).

The product of its digits is 37632, while the sum is 36.

The square root of 7627428 is about 2761.7798608868. The cubic root of 7627428 is about 196.8457483373.

The spelling of 7627428 in words is "seven million, six hundred twenty-seven thousand, four hundred twenty-eight".