1305772 has 12 divisors (see below), whose sum is σ = 2460976. Its totient is φ = 602640.

The previous prime is 1305749. The next prime is 1305797. The reversal of 1305772 is 2775031.

It is an Ulam number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 12504 + ... + 12607.

2^1305772 is an apocalyptic number.

It is an amenable number.

1305772 is a deficient number, since it is larger than the sum of its proper divisors (1155204).

1305772 is a wasteful number, since it uses less digits than its factorization.

1305772 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25128 (or 25126 counting only the distinct ones).

The product of its (nonzero) digits is 1470, while the sum is 25.

The square root of 1305772 is about 1142.7038111427. The cubic root of 1305772 is about 109.3005759820.

The spelling of 1305772 in words is "one million, three hundred five thousand, seven hundred seventy-two".