1525940 has 24 divisors (see below), whose sum is σ = 3451560. Its totient is φ = 563328.

The previous prime is 1525933. The next prime is 1525957. The reversal of 1525940 is 495251.

It can be written as a sum of positive squares in 4 ways, for example, as 17956 + 1507984 = 134^2 + 1228^2 .

It is a Harshad number since it is a multiple of its sum of digits (26).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2675 + ... + 3194.

It is an arithmetic number, because the mean of its divisors is an integer number (143815).

2^1525940 is an apocalyptic number.

1525940 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1525940 is an abundant number, since it is smaller than the sum of its proper divisors (1925620).

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

1525940 is a wasteful number, since it uses less digits than its factorization.

1525940 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5891 (or 5889 counting only the distinct ones).

The product of its (nonzero) digits is 1800, while the sum is 26.

The square root of 1525940 is about 1235.2894397671. The cubic root of 1525940 is about 115.1275207987.

The spelling of 1525940 in words is "one million, five hundred twenty-five thousand, nine hundred forty".