1267390 has 8 divisors (see below), whose sum is σ = 2281320. Its totient is φ = 506952.

The previous prime is 1267381. The next prime is 1267403. The reversal of 1267390 is 937621.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a plaindrome in base 16.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 63360 + ... + 63379.

It is an arithmetic number, because the mean of its divisors is an integer number (285165).

2^1267390 is an apocalyptic number.

1267390 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1267390 is a deficient number, since it is larger than the sum of its proper divisors (1013930).

1267390 is a wasteful number, since it uses less digits than its factorization.

1267390 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 126746.

The product of its (nonzero) digits is 2268, while the sum is 28.

The square root of 1267390 is about 1125.7841711447. The cubic root of 1267390 is about 108.2189772908.

The spelling of 1267390 in words is "one million, two hundred sixty-seven thousand, three hundred ninety".