1523040 has 96 divisors (see below), whose sum is σ = 5080320. Its totient is φ = 382464.

The previous prime is 1523009. The next prime is 1523063. The reversal of 1523040 is 403251.

It is a tau number, because it is divible by the number of its divisors (96).

It is a Harshad number since it is a multiple of its sum of digits (15).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 9037 + ... + 9203.

It is an arithmetic number, because the mean of its divisors is an integer number (52920).

2^1523040 is an apocalyptic number.

1523040 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 1523040, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2540160).

1523040 is an abundant number, since it is smaller than the sum of its proper divisors (3557280).

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

1523040 is a wasteful number, since it uses less digits than its factorization.

1523040 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 204 (or 196 counting only the distinct ones).

The product of its (nonzero) digits is 120, while the sum is 15.

The square root of 1523040 is about 1234.1150675687. The cubic root of 1523040 is about 115.0545424953.

Adding to 1523040 its reverse (403251), we get a palindrome (1926291).

The spelling of 1523040 in words is "one million, five hundred twenty-three thousand, forty".