2657438 has 8 divisors (see below), whose sum is σ = 4555632. Its totient is φ = 1138896.

The previous prime is 2657429. The next prime is 2657461. The reversal of 2657438 is 8347562.

It is a happy number.

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 = 2657398 and 2657407.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 94895 + ... + 94922.

It is an arithmetic number, because the mean of its divisors is an integer number (569454).

2^2657438 is an apocalyptic number.

2657438 is a deficient number, since it is larger than the sum of its proper divisors (1898194).

2657438 is a wasteful number, since it uses less digits than its factorization.

2657438 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 189826.

The product of its digits is 40320, while the sum is 35.

The square root of 2657438 is about 1630.1650223214. The cubic root of 2657438 is about 138.5120999738.

The spelling of 2657438 in words is "two million, six hundred fifty-seven thousand, four hundred thirty-eight".