1340672 has 18 divisors (see below), whose sum is σ = 2676618. Its totient is φ = 670208.

The previous prime is 1340653. The next prime is 1340681. The reversal of 1340672 is 2760431.

It can be written as a sum of positive squares in only one way, i.e., 1290496 + 50176 = 1136^2 + 224^2 .

It is a super-3 number, since 3×1340672³ = 7229177235813433344, which contains 333 as substring.

It is a congruent number.

It is an unprimeable number.

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 as a sum of consecutive naturals, namely, 2363 + ... + 2874.

It is an arithmetic number, because the mean of its divisors is an integer number (148701).

2^1340672 is an apocalyptic number.

It is an amenable number.

1340672 is a deficient number, since it is larger than the sum of its proper divisors (1335946).

1340672 is an frugal number, since it uses more digits than its factorization.

1340672 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5253 (or 5239 counting only the distinct ones).

The product of its (nonzero) digits is 1008, while the sum is 23.

The square root of 1340672 is about 1157.8739136884. The cubic root of 1340672 is about 110.2658034774.

The spelling of 1340672 in words is "one million, three hundred forty thousand, six hundred seventy-two".