102646445 has 16 divisors (see below), whose sum is σ = 134576640. Its totient is φ = 74539200.

The previous prime is 102646441. The next prime is 102646463. The reversal of 102646445 is 544646201.

It is not a de Polignac number, because 102646445 - 2² = 102646441 is a prime.

It is a super-2 number, since 2×102646445² = 21072585342276050, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (102646441) by changing a digit.

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 in 15 ways as a sum of consecutive naturals, for example, 57476 + ... + 59234.

It is an arithmetic number, because the mean of its divisors is an integer number (8411040).

Almost surely, 2^102646445 is an apocalyptic number.

It is an amenable number.

102646445 is a deficient number, since it is larger than the sum of its proper divisors (31930195).

102646445 is a wasteful number, since it uses less digits than its factorization.

102646445 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2836.

The product of its (nonzero) digits is 23040, while the sum is 32.

The square root of 102646445 is about 10131.4581872502. The cubic root of 102646445 is about 468.2178548999.

The spelling of 102646445 in words is "one hundred two million, six hundred forty-six thousand, four hundred forty-five".