1378052 has 12 divisors (see below), whose sum is σ = 2597196. Its totient is φ = 636000.

The previous prime is 1378033. The next prime is 1378057. The reversal of 1378052 is 2508731.

1378052 = T₁₀₈ + T₁₀₉ + ... + T₂₁₁.

It can be written as a sum of positive squares in 2 ways, for example, as 329476 + 1048576 = 574^2 + 1024^2 .

It is a Harshad number since it is a multiple of its sum of digits (26).

It is an Ulam number.

It is not an unprimeable number, because it can be changed into a prime (1378057) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 13199 + ... + 13302.

It is an arithmetic number, because the mean of its divisors is an integer number (216433).

2^1378052 is an apocalyptic number.

It is an amenable number.

1378052 is a deficient number, since it is larger than the sum of its proper divisors (1219144).

1378052 is a wasteful number, since it uses less digits than its factorization.

1378052 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 26518 (or 26516 counting only the distinct ones).

The product of its (nonzero) digits is 1680, while the sum is 26.

The square root of 1378052 is about 1173.9045957828. The cubic root of 1378052 is about 111.2812175155.

The spelling of 1378052 in words is "one million, three hundred seventy-eight thousand, fifty-two".