102686458 has 12 divisors (see below), whose sum is σ = 179177562. Its totient is φ = 44008440.

The previous prime is 102686453. The next prime is 102686473. The reversal of 102686458 is 854686201.

It can be written as a sum of positive squares in only one way, i.e., 77915929 + 24770529 = 8827^2 + 4977^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 102686458.

It is not an unprimeable number, because it can be changed into a prime (102686453) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 523813 + ... + 524008.

Almost surely, 2^102686458 is an apocalyptic number.

102686458 is a deficient number, since it is larger than the sum of its proper divisors (76491104).

102686458 is a wasteful number, since it uses less digits than its factorization.

102686458 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1047837 (or 1047830 counting only the distinct ones).

The product of its (nonzero) digits is 92160, while the sum is 40.

The square root of 102686458 is about 10133.4326859165. The cubic root of 102686458 is about 468.2786862555.

The spelling of 102686458 in words is "one hundred two million, six hundred eighty-six thousand, four hundred fifty-eight".