1525920 has 144 divisors (see below), whose sum is σ = 5570208. Its totient is φ = 348160.

The previous prime is 1525877. The next prime is 1525921. The reversal of 1525920 is 295251.

It is a Harshad number since it is a multiple of its sum of digits (24).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1525921) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 89752 + ... + 89768.

It is an arithmetic number, because the mean of its divisors is an integer number (38682).

2^1525920 is an apocalyptic number.

1525920 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 1525920, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2785104).

1525920 is an abundant number, since it is smaller than the sum of its proper divisors (4044288).

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

1525920 is a wasteful number, since it uses less digits than its factorization.

1525920 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 63 (or 38 counting only the distinct ones).

The product of its (nonzero) digits is 900, while the sum is 24.

The square root of 1525920 is about 1235.2813444718. The cubic root of 1525920 is about 115.1270178169.

The spelling of 1525920 in words is "one million, five hundred twenty-five thousand, nine hundred twenty".