1947428 has 24 divisors (see below), whose sum is σ = 3928512. Its totient is φ = 827424.

The previous prime is 1947419. The next prime is 1947431. The reversal of 1947428 is 8247491.

It is a Smith number, since the sum of its digits (35) coincides with the sum of the digits of its prime factors.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4175 + ... + 4617.

It is an arithmetic number, because the mean of its divisors is an integer number (163688).

2^1947428 is an apocalyptic number.

It is an amenable number.

1947428 is an abundant number, since it is smaller than the sum of its proper divisors (1981084).

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

1947428 is a wasteful number, since it uses less digits than its factorization.

1947428 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 611 (or 609 counting only the distinct ones).

The product of its digits is 16128, while the sum is 35.

The square root of 1947428 is about 1395.5027767798. The cubic root of 1947428 is about 124.8783456401.

The spelling of 1947428 in words is "one million, nine hundred forty-seven thousand, four hundred twenty-eight".