1025730 has 64 divisors (see below), whose sum is σ = 2851200. Its totient is φ = 262080.

The previous prime is 1025707. The next prime is 1025741. The reversal of 1025730 is 375201.

1025730 = 15² + 16² + ... + 145².

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a Curzon 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 31 ways as a sum of consecutive naturals, for example, 7765 + ... + 7895.

It is an arithmetic number, because the mean of its divisors is an integer number (44550).

2^1025730 is an apocalyptic number.

1025730 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 1025730, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1425600).

1025730 is an abundant number, since it is smaller than the sum of its proper divisors (1825470).

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

1025730 is a wasteful number, since it uses less digits than its factorization.

1025730 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 176 (or 170 counting only the distinct ones).

The product of its (nonzero) digits is 210, while the sum is 18.

The square root of 1025730 is about 1012.7832937011. The cubic root of 1025730 is about 100.8504141241.

It can be divided in two parts, 102 and 5730, that added together give a cube (5832 = 18³).

The spelling of 1025730 in words is "one million, twenty-five thousand, seven hundred thirty".