1378436 has 12 divisors (see below), whose sum is σ = 2517312. Its totient is φ = 659208.

The previous prime is 1378427. The next prime is 1378439. The reversal of 1378436 is 6348731.

It is a super-4 number, since 4×1378436⁴ (a number of 26 digits) contains 4444 as substring.

It is a hoax number, since the sum of its digits (32) coincides with the sum of the digits of its distinct prime factors.

It is not an unprimeable number, because it can be changed into a prime (1378439) 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, 7400 + ... + 7583.

It is an arithmetic number, because the mean of its divisors is an integer number (209776).

2^1378436 is an apocalyptic number.

It is an amenable number.

1378436 is a deficient number, since it is larger than the sum of its proper divisors (1138876).

1378436 is a wasteful number, since it uses less digits than its factorization.

1378436 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15010 (or 15008 counting only the distinct ones).

The product of its digits is 12096, while the sum is 32.

The square root of 1378436 is about 1174.0681411230. The cubic root of 1378436 is about 111.2915528824.

The spelling of 1378436 in words is "one million, three hundred seventy-eight thousand, four hundred thirty-six".