102788438 has 8 divisors (see below), whose sum is σ = 155679888. Its totient is φ = 50895144.

The previous prime is 102788437. The next prime is 102788459. The reversal of 102788438 is 834887201.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a junction number, because it is equal to n+sod(n) for n = 102788395 and 102788404.

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 in 3 ways as a sum of consecutive naturals, for example, 249281 + ... + 249692.

It is an arithmetic number, because the mean of its divisors is an integer number (19459986).

Almost surely, 2^102788438 is an apocalyptic number.

102788438 is a deficient number, since it is larger than the sum of its proper divisors (52891450).

102788438 is a wasteful number, since it uses less digits than its factorization.

102788438 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 499078.

The product of its (nonzero) digits is 86016, while the sum is 41.

The square root of 102788438 is about 10138.4632957860. The cubic root of 102788438 is about 468.4336539803.

The spelling of 102788438 in words is "one hundred two million, seven hundred eighty-eight thousand, four hundred thirty-eight".