1575420 has 144 divisors (see below), whose sum is σ = 5720064. Its totient is φ = 316800.

The previous prime is 1575401. The next prime is 1575421. The reversal of 1575420 is 245751.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1575421) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 50805 + ... + 50835.

2^1575420 is an apocalyptic number.

1575420 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1575420, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2860032).

1575420 is an abundant number, since it is smaller than the sum of its proper divisors (4144644).

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

1575420 is a wasteful number, since it uses less digits than its factorization.

1575420 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 72 (or 59 counting only the distinct ones).

The product of its (nonzero) digits is 1400, while the sum is 24.

The square root of 1575420 is about 1255.1573606524. The cubic root of 1575420 is about 116.3586797279.

The spelling of 1575420 in words is "one million, five hundred seventy-five thousand, four hundred twenty".