1957628 has 6 divisors (see below), whose sum is σ = 3425856. Its totient is φ = 978812.

The previous prime is 1957621. The next prime is 1957639. The reversal of 1957628 is 8267591.

It is a d-powerful number, because it can be written as 1 + 9 + 5⁹ + 7⁴ + 6² + 2¹¹ + 8 .

It is a junction number, because it is equal to n+sod(n) for n = 1957591 and 1957600.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1957621) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 244700 + ... + 244707.

It is an arithmetic number, because the mean of its divisors is an integer number (570976).

2^1957628 is an apocalyptic number.

It is an amenable number.

1957628 is a deficient number, since it is larger than the sum of its proper divisors (1468228).

1957628 is a wasteful number, since it uses less digits than its factorization.

1957628 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 489411 (or 489409 counting only the distinct ones).

The product of its digits is 30240, while the sum is 38.

The square root of 1957628 is about 1399.1526006837. The cubic root of 1957628 is about 125.0959902681.

The spelling of 1957628 in words is "one million, nine hundred fifty-seven thousand, six hundred twenty-eight".