2047428 has 18 divisors (see below), whose sum is σ = 5175534. Its totient is φ = 682464.

The previous prime is 2047403. The next prime is 2047439. The reversal of 2047428 is 8247402.

It can be written as a sum of positive squares in only one way, i.e., 1258884 + 788544 = 1122^2 + 888^2 .

It is a tau number, because it is divible by the number of its divisors (18).

It is a super-2 number, since 2×2047428² = 8383922830368, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

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 5 ways as a sum of consecutive naturals, for example, 28401 + ... + 28472.

2^2047428 is an apocalyptic number.

It is an amenable number.

2047428 is an abundant number, since it is smaller than the sum of its proper divisors (3128106).

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

2047428 is a wasteful number, since it uses less digits than its factorization.

2047428 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 56883 (or 56878 counting only the distinct ones).

The product of its (nonzero) digits is 3584, while the sum is 27.

The square root of 2047428 is about 1430.8836430682. The cubic root of 2047428 is about 126.9802602258.

It can be divided in two parts, 20474 and 28, that added together give a palindrome (20502).

The spelling of 2047428 in words is "two million, forty-seven thousand, four hundred twenty-eight".