102206445 has 32 divisors (see below), whose sum is σ = 180192384. Its totient is φ = 49056000.

The previous prime is 102206441. The next prime is 102206471. The reversal of 102206445 is 544602201.

It is not a de Polignac number, because 102206445 - 2² = 102206441 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (102206441) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 13599 + ... + 19731.

It is an arithmetic number, because the mean of its divisors is an integer number (5631012).

Almost surely, 2^102206445 is an apocalyptic number.

102206445 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

102206445 is a deficient number, since it is larger than the sum of its proper divisors (77985939).

102206445 is a wasteful number, since it uses less digits than its factorization.

102206445 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6253.

The product of its (nonzero) digits is 1920, while the sum is 24.

The square root of 102206445 is about 10109.7203225411. The cubic root of 102206445 is about 467.5478822719.

Adding to 102206445 its reverse (544602201), we get a palindrome (646808646).

The spelling of 102206445 in words is "one hundred two million, two hundred six thousand, four hundred forty-five".