1371772 has 12 divisors (see below), whose sum is σ = 2412256. Its totient is φ = 682560.

The previous prime is 1371767. The next prime is 1371779. The reversal of 1371772 is 2771731.

It is a self number, because there is not a number n which added to its sum of digits gives 1371772.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1371779) by changing a digit.

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, 253 + ... + 1675.

2^1371772 is an apocalyptic number.

It is an amenable number.

1371772 is a deficient number, since it is larger than the sum of its proper divisors (1040484).

1371772 is a wasteful number, since it uses less digits than its factorization.

1371772 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1668 (or 1666 counting only the distinct ones).

The product of its digits is 2058, while the sum is 28.

The square root of 1371772 is about 1171.2267073458. The cubic root of 1371772 is about 111.1119180682. Note that the first 3 decimals are identical.

The spelling of 1371772 in words is "one million, three hundred seventy-one thousand, seven hundred seventy-two".