1378672 has 20 divisors (see below), whose sum is σ = 2690800. Its totient is φ = 684288.

The previous prime is 1378669. The next prime is 1378673. The reversal of 1378672 is 2768731.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1378673) 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, 2968 + ... + 3400.

It is an arithmetic number, because the mean of its divisors is an integer number (134540).

2^1378672 is an apocalyptic number.

It is an amenable number.

1378672 is a deficient number, since it is larger than the sum of its proper divisors (1312128).

1378672 is a wasteful number, since it uses less digits than its factorization.

1378672 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 640 (or 634 counting only the distinct ones).

The product of its digits is 14112, while the sum is 34.

The square root of 1378672 is about 1174.1686420613. The cubic root of 1378672 is about 111.2979038743.

The spelling of 1378672 in words is "one million, three hundred seventy-eight thousand, six hundred seventy-two".