102628738 has 16 divisors (see below), whose sum is σ = 159495480. Its totient is φ = 49469056.

The previous prime is 102628733. The next prime is 102628739. The reversal of 102628738 is 837826201.

It can be written as a sum of positive squares in 4 ways, for example, as 84879369 + 17749369 = 9213^2 + 4213^2 .

It is a junction number, because it is equal to n+sod(n) for n = 102628697 and 102628706.

It is not an unprimeable number, because it can be changed into a prime (102628733) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 62820 + ... + 64432.

Almost surely, 2^102628738 is an apocalyptic number.

102628738 is a deficient number, since it is larger than the sum of its proper divisors (56866742).

102628738 is a wasteful number, since it uses less digits than its factorization.

102628738 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2741.

The product of its (nonzero) digits is 32256, while the sum is 37.

The square root of 102628738 is about 10130.5842871969. The cubic root of 102628738 is about 468.1909300826.

The spelling of 102628738 in words is "one hundred two million, six hundred twenty-eight thousand, seven hundred thirty-eight".