102305432 has 8 divisors (see below), whose sum is σ = 191822700. Its totient is φ = 51152712.

The previous prime is 102305431. The next prime is 102305447. The reversal of 102305432 is 234503201.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (8).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (102305431) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6394082 + ... + 6394097.

Almost surely, 2^102305432 is an apocalyptic number.

It is an amenable number.

102305432 is a deficient number, since it is larger than the sum of its proper divisors (89517268).

102305432 is a wasteful number, since it uses less digits than its factorization.

102305432 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12788185 (or 12788181 counting only the distinct ones).

The product of its (nonzero) digits is 720, while the sum is 20.

The square root of 102305432 is about 10114.6147726940. The cubic root of 102305432 is about 467.6987736994.

Adding to 102305432 its reverse (234503201), we get a palindrome (336808633).

The spelling of 102305432 in words is "one hundred two million, three hundred five thousand, four hundred thirty-two".