732638 has 8 divisors (see below), whose sum is σ = 1103232. Its totient is φ = 364896.

The previous prime is 732631. The next prime is 732653. The reversal of 732638 is 836237.

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

It is an Ulam number.

It is a self number, because there is not a number n which added to its sum of digits gives 732638.

It is a congruent number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 732638.

It is not an unprimeable number, because it can be changed into a prime (732631) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 131 + ... + 1217.

It is an arithmetic number, because the mean of its divisors is an integer number (137904).

2⁷³²⁶³⁸ is an apocalyptic number.

732638 is a deficient number, since it is larger than the sum of its proper divisors (370594).

732638 is a wasteful number, since it uses less digits than its factorization.

732638 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1426.

The product of its digits is 6048, while the sum is 29.

The square root of 732638 is about 855.9427550952. The cubic root of 732638 is about 90.1494635816.

The spelling of 732638 in words is "seven hundred thirty-two thousand, six hundred thirty-eight".