787438 has 8 divisors (see below), whose sum is σ = 1206432. Its totient is φ = 385296.

The previous prime is 787433. The next prime is 787439. The reversal of 787438 is 834787.

787438 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is an alternating number because its digits alternate between odd and even.

It is a junction number, because it is equal to n+sod(n) for n = 787397 and 787406.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (787433) 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, 4095 + ... + 4282.

It is an arithmetic number, because the mean of its divisors is an integer number (150804).

2⁷⁸⁷⁴³⁸ is an apocalyptic number.

787438 is a deficient number, since it is larger than the sum of its proper divisors (418994).

787438 is a wasteful number, since it uses less digits than its factorization.

787438 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8426.

The product of its digits is 37632, while the sum is 37.

The square root of 787438 is about 887.3770337348. The cubic root of 787438 is about 92.3433139939.

It can be divided in two parts, 787 and 438, that added together give a triangular number (1225 = T₄₉).

The spelling of 787438 in words is "seven hundred eighty-seven thousand, four hundred thirty-eight".