1378084 has 12 divisors (see below), whose sum is σ = 2427264. Its totient is φ = 684584.

The previous prime is 1378081. The next prime is 1378099. The reversal of 1378084 is 4808731.

1378084 = T₉₅₇ + T₉₅₈ + T₉₅₉.

It is a happy number.

It is a super-2 number, since 2×1378084² = 3798231022112, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (1378081) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 364 + ... + 1699.

It is an arithmetic number, because the mean of its divisors is an integer number (202272).

2^1378084 is an apocalyptic number.

1378084 is the 959-th centered triangular number.

It is an amenable number.

1378084 is a deficient number, since it is larger than the sum of its proper divisors (1049180).

1378084 is a wasteful number, since it uses less digits than its factorization.

1378084 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2234 (or 2232 counting only the distinct ones).

The product of its (nonzero) digits is 5376, while the sum is 31.

The square root of 1378084 is about 1173.9182254314. The cubic root of 1378084 is about 111.2820788694.

The spelling of 1378084 in words is "one million, three hundred seventy-eight thousand, eighty-four".