5402638 has 4 divisors (see below), whose sum is σ = 8103960. Its totient is φ = 2701318.

The previous prime is 5402633. The next prime is 5402647. The reversal of 5402638 is 8362045.

It is a semiprime because it is the product of two primes.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (5402633) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1350658 + ... + 1350661.

It is an arithmetic number, because the mean of its divisors is an integer number (2025990).

Almost surely, 2^5402638 is an apocalyptic number.

5402638 is a deficient number, since it is larger than the sum of its proper divisors (2701322).

5402638 is a wasteful number, since it uses less digits than its factorization.

5402638 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2701321.

The product of its (nonzero) digits is 5760, while the sum is 28.

The square root of 5402638 is about 2324.3575456457. The cubic root of 5402638 is about 175.4696283782.

The spelling of 5402638 in words is "five million, four hundred two thousand, six hundred thirty-eight".