1345872 has 40 divisors (see below), whose sum is σ = 3794400. Its totient is φ = 407680.

The previous prime is 1345859. The next prime is 1345879. The reversal of 1345872 is 2785431.

It is a super-2 number, since 2×1345872² = 3622742880768, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1345879) 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 7 ways as a sum of consecutive naturals, for example, 747 + ... + 1802.

It is an arithmetic number, because the mean of its divisors is an integer number (94860).

2^1345872 is an apocalyptic number.

1345872 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

1345872 is an abundant number, since it is smaller than the sum of its proper divisors (2448528).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1345872 is a wasteful number, since it uses less digits than its factorization.

1345872 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2571 (or 2565 counting only the distinct ones).

The product of its digits is 6720, while the sum is 30.

The square root of 1345872 is about 1160.1172354551. The cubic root of 1345872 is about 110.4081804482.

It can be divided in two parts, 13458 and 72, that added together give a triangular number (13530 = T₁₆₄).

The spelling of 1345872 in words is "one million, three hundred forty-five thousand, eight hundred seventy-two".