102788432 has 10 divisors (see below), whose sum is σ = 199152618. Its totient is φ = 51394208.

The previous prime is 102788431. The next prime is 102788437. The reversal of 102788432 is 234887201.

It can be written as a sum of positive squares in only one way, i.e., 97930816 + 4857616 = 9896^2 + 2204^2 .

It is a junction number, because it is equal to n+sod(n) for n = 102788392 and 102788401.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (102788431) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3212123 + ... + 3212154.

Almost surely, 2^102788432 is an apocalyptic number.

It is an amenable number.

102788432 is a deficient number, since it is larger than the sum of its proper divisors (96364186).

102788432 is an equidigital number, since it uses as much as digits as its factorization.

102788432 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6424285 (or 6424279 counting only the distinct ones).

The product of its (nonzero) digits is 21504, while the sum is 35.

The square root of 102788432 is about 10138.4629998832. The cubic root of 102788432 is about 468.4336448658.

The spelling of 102788432 in words is "one hundred two million, seven hundred eighty-eight thousand, four hundred thirty-two".