7816628 has 6 divisors (see below), whose sum is σ = 13679106. Its totient is φ = 3908312.

The previous prime is 7816607. The next prime is 7816637. The reversal of 7816628 is 8266187.

It can be written as a sum of positive squares in only one way, i.e., 4761124 + 3055504 = 2182^2 + 1748^2 .

It is a super-2 number, since 2×7816628² = 122199346580768, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 7816591 and 7816600.

It is a congruent number.

It is an unprimeable number.

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, 977075 + ... + 977082.

It is an arithmetic number, because the mean of its divisors is an integer number (2279851).

Almost surely, 2^7816628 is an apocalyptic number.

It is an amenable number.

7816628 is a deficient number, since it is larger than the sum of its proper divisors (5862478).

7816628 is a wasteful number, since it uses less digits than its factorization.

7816628 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1954161 (or 1954159 counting only the distinct ones).

The product of its digits is 32256, while the sum is 38.

The square root of 7816628 is about 2795.8233134445. The cubic root of 7816628 is about 198.4600735640.

The spelling of 7816628 in words is "seven million, eight hundred sixteen thousand, six hundred twenty-eight".