1020730 has 16 divisors (see below), whose sum is σ = 1857024. Its totient is φ = 403920.

The previous prime is 1020709. The next prime is 1020743. The reversal of 1020730 is 370201.

It is a self number, because there is not a number n which added to its sum of digits gives 1020730.

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, 535 + ... + 1525.

It is an arithmetic number, because the mean of its divisors is an integer number (116064).

2^1020730 is an apocalyptic number.

1020730 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1020730 is a deficient number, since it is larger than the sum of its proper divisors (836294).

1020730 is a wasteful number, since it uses less digits than its factorization.

1020730 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1101.

The product of its (nonzero) digits is 42, while the sum is 13.

The square root of 1020730 is about 1010.3118330496. The cubic root of 1020730 is about 100.6862794313.

Adding to 1020730 its reverse (370201), we get a palindrome (1390931).

The spelling of 1020730 in words is "one million, twenty thousand, seven hundred thirty".