1491428 has 12 divisors (see below), whose sum is σ = 2625840. Its totient is φ = 741192.

The previous prime is 1491421. The next prime is 1491437. The reversal of 1491428 is 8241941.

It is a self number, because there is not a number n which added to its sum of digits gives 1491428.

It is not an unprimeable number, because it can be changed into a prime (1491421) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 326 + ... + 1757.

It is an arithmetic number, because the mean of its divisors is an integer number (218820).

2^1491428 is an apocalyptic number.

It is an amenable number.

1491428 is a deficient number, since it is larger than the sum of its proper divisors (1134412).

1491428 is a wasteful number, since it uses less digits than its factorization.

1491428 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2266 (or 2264 counting only the distinct ones).

The product of its digits is 2304, while the sum is 29.

The square root of 1491428 is about 1221.2403530837. The cubic root of 1491428 is about 114.2529522162.

The spelling of 1491428 in words is "one million, four hundred ninety-one thousand, four hundred twenty-eight".