1825680 has 40 divisors (see below), whose sum is σ = 5660352. Its totient is φ = 486784.

The previous prime is 1825679. The next prime is 1825687. The reversal of 1825680 is 865281.

It is a tau number, because it is divible by the number of its divisors (40).

It is a hoax number, since the sum of its digits (30) coincides with the sum of the digits of its distinct prime factors.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is not an unprimeable number, because it can be changed into a prime (1825687) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3564 + ... + 4043.

2^1825680 is an apocalyptic number.

1825680 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1825680 is an abundant number, since it is smaller than the sum of its proper divisors (3834672).

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

1825680 is a wasteful number, since it uses less digits than its factorization.

1825680 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7623 (or 7617 counting only the distinct ones).

The product of its (nonzero) digits is 3840, while the sum is 30.

The square root of 1825680 is about 1351.1772644624. The cubic root of 1825680 is about 122.2197954829.

It can be divided in two parts, 18256 and 80, that added together give a triangular number (18336 = T₁₉₁).

The spelling of 1825680 in words is "one million, eight hundred twenty-five thousand, six hundred eighty".