102651728 has 10 divisors (see below), whose sum is σ = 198887754. Its totient is φ = 51325856.

The previous prime is 102651697. The next prime is 102651739. The reversal of 102651728 is 827156201.

It can be written as a sum of positive squares in only one way, i.e., 67699984 + 34951744 = 8228^2 + 5912^2 .

It is a super-2 number, since 2×102651728² = 21074754522771968, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 102651694 and 102651703.

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, 3207851 + ... + 3207882.

Almost surely, 2^102651728 is an apocalyptic number.

It is an amenable number.

102651728 is a deficient number, since it is larger than the sum of its proper divisors (96236026).

102651728 is an equidigital number, since it uses as much as digits as its factorization.

102651728 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6415741 (or 6415735 counting only the distinct ones).

The product of its (nonzero) digits is 6720, while the sum is 32.

The square root of 102651728 is about 10131.7189064837. The cubic root of 102651728 is about 468.2258874966.

The spelling of 102651728 in words is "one hundred two million, six hundred fifty-one thousand, seven hundred twenty-eight".