1388204 has 6 divisors (see below), whose sum is σ = 2429364. Its totient is φ = 694100.

The previous prime is 1388183. The next prime is 1388227. The reversal of 1388204 is 4028831.

It is a super-2 number, since 2×1388204² = 3854220691232, which contains 22 as substring.

It is an Ulam number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 173522 + ... + 173529.

It is an arithmetic number, because the mean of its divisors is an integer number (404894).

2^1388204 is an apocalyptic number.

It is an amenable number.

1388204 is a deficient number, since it is larger than the sum of its proper divisors (1041160).

1388204 is a wasteful number, since it uses less digits than its factorization.

1388204 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 347055 (or 347053 counting only the distinct ones).

The product of its (nonzero) digits is 1536, while the sum is 26.

The square root of 1388204 is about 1178.2206924002. The cubic root of 1388204 is about 111.5538158441.

The spelling of 1388204 in words is "one million, three hundred eighty-eight thousand, two hundred four".