7628418 has 90 divisors (see below), whose sum is σ = 20546163. Its totient is φ = 2109240.

The previous prime is 7628417. The next prime is 7628437. The reversal of 7628418 is 8148267.

It can be written as a sum of positive squares in only one way, i.e., 3814209 + 3814209 = 1953^2 + 1953^2 .

It is an ABA number since it can be written as A⋅B^A, here for A=2, B=1953.

It is a super-2 number, since 2×7628418² = 116385522365448, which contains 22 as substring.

It is a Smith number, since the sum of its digits (36) coincides with the sum of the digits of its prime factors.

It is not an unprimeable number, because it can be changed into a prime (7628417) by changing a digit.

It is a polite number, since it can be written in 44 ways as a sum of consecutive naturals, for example, 246063 + ... + 246093.

Almost surely, 2^7628418 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 7628418

7628418 is an abundant number, since it is smaller than the sum of its proper divisors (12917745).

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

7628418 is a wasteful number, since it uses less digits than its factorization.

7628418 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 90 (or 43 counting only the distinct ones).

The product of its digits is 21504, while the sum is 36.

The square root of 7628418 is about 2761.9590873147. The cubic root of 7628418 is about 196.8542644828.

It can be divided in two parts, 762 and 8418, that added together give a triangular number (9180 = T₁₃₅).

The spelling of 7628418 in words is "seven million, six hundred twenty-eight thousand, four hundred eighteen".