2072638 has 4 divisors (see below), whose sum is σ = 3108960. Its totient is φ = 1036318.

The previous prime is 2072617. The next prime is 2072647. The reversal of 2072638 is 8362702.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 8362702 = 2 ⋅4181351.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 518158 + ... + 518161.

It is an arithmetic number, because the mean of its divisors is an integer number (777240).

2^2072638 is an apocalyptic number.

2072638 is a deficient number, since it is larger than the sum of its proper divisors (1036322).

2072638 is a wasteful number, since it uses less digits than its factorization.

2072638 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1036321.

The product of its (nonzero) digits is 4032, while the sum is 28.

The square root of 2072638 is about 1439.6659334721. The cubic root of 2072638 is about 127.4993053916.

Subtracting 2072638 from its reverse (8362702), we obtain a square (6290064 = 2508²).

The spelling of 2072638 in words is "two million, seventy-two thousand, six hundred thirty-eight".