1491772 has 6 divisors (see below), whose sum is σ = 2610608. Its totient is φ = 745884.

The previous prime is 1491769. The next prime is 1491773. The reversal of 1491772 is 2771941.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1491773) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 186468 + ... + 186475.

2^1491772 is an apocalyptic number.

It is an amenable number.

1491772 is a deficient number, since it is larger than the sum of its proper divisors (1118836).

1491772 is a wasteful number, since it uses less digits than its factorization.

1491772 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 372947 (or 372945 counting only the distinct ones).

The product of its digits is 3528, while the sum is 31.

The square root of 1491772 is about 1221.3811853799. The cubic root of 1491772 is about 114.2617357432.

The spelling of 1491772 in words is "one million, four hundred ninety-one thousand, seven hundred seventy-two".