1072730 has 8 divisors (see below), whose sum is σ = 1930932. Its totient is φ = 429088.

The previous prime is 1072711. The next prime is 1072733. The reversal of 1072730 is 372701.

It can be written as a sum of positive squares in 2 ways, for example, as 935089 + 137641 = 967^2 + 371^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a super-3 number, since 3×1072730³ = 3703331025466251000, which contains 333 as substring.

It is not an unprimeable number, because it can be changed into a prime (1072733) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 53627 + ... + 53646.

2^1072730 is an apocalyptic number.

1072730 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1072730 is a deficient number, since it is larger than the sum of its proper divisors (858202).

1072730 is a wasteful number, since it uses less digits than its factorization.

1072730 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 107280.

The product of its (nonzero) digits is 294, while the sum is 20.

The square root of 1072730 is about 1035.7267979540. The cubic root of 1072730 is about 102.3678248726.

The spelling of 1072730 in words is "one million, seventy-two thousand, seven hundred thirty".