1957428 has 36 divisors (see below), whose sum is σ = 5398848. Its totient is φ = 593040.

The previous prime is 1957391. The next prime is 1957441. The reversal of 1957428 is 8247591.

It is a tau number, because it is divible by the number of its divisors (36).

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a junction number, because it is equal to n+sod(n) for n = 1957392 and 1957401.

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 11 ways as a sum of consecutive naturals, for example, 2076 + ... + 2867.

It is an arithmetic number, because the mean of its divisors is an integer number (149968).

2^1957428 is an apocalyptic number.

1957428 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

It is an amenable number.

1957428 is an abundant number, since it is smaller than the sum of its proper divisors (3441420).

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

1957428 is a wasteful number, since it uses less digits than its factorization.

1957428 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4964 (or 4959 counting only the distinct ones).

The product of its digits is 20160, while the sum is 36.

The square root of 1957428 is about 1399.0811270259. The cubic root of 1957428 is about 125.0917300017.

The spelling of 1957428 in words is "one million, nine hundred fifty-seven thousand, four hundred twenty-eight".