3658238 has 4 divisors (see below), whose sum is σ = 5487360. Its totient is φ = 1829118.

The previous prime is 3658211. The next prime is 3658283. The reversal of 3658238 is 8328563.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 8328563 = 2309 ⋅3607.

It is a junction number, because it is equal to n+sod(n) for n = 3658198 and 3658207.

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, 914558 + ... + 914561.

It is an arithmetic number, because the mean of its divisors is an integer number (1371840).

Almost surely, 2^3658238 is an apocalyptic number.

3658238 is a deficient number, since it is larger than the sum of its proper divisors (1829122).

3658238 is a wasteful number, since it uses less digits than its factorization.

3658238 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1829121.

The product of its digits is 34560, while the sum is 35.

The square root of 3658238 is about 1912.6520854562. The cubic root of 3658238 is about 154.0839200784.

The spelling of 3658238 in words is "three million, six hundred fifty-eight thousand, two hundred thirty-eight".