1000020734 has 4 divisors (see below), whose sum is σ = 1500031104. Its totient is φ = 500010366.

The previous prime is 1000020727. The next prime is 1000020737. The reversal of 1000020734 is 4370200001.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1000020737) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 250005182 + ... + 250005185.

It is an arithmetic number, because the mean of its divisors is an integer number (375007776).

Almost surely, 2^1000020734 is an apocalyptic number.

1000020734 is a deficient number, since it is larger than the sum of its proper divisors (500010370).

1000020734 is an equidigital number, since it uses as much as digits as its factorization.

1000020734 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 500010369.

The product of its (nonzero) digits is 168, while the sum is 17.

The square root of 1000020734 is about 31623.1044333095. The cubic root of 1000020734 is about 1000.0069112856.

Adding to 1000020734 its reverse (4370200001), we get a palindrome (5370220735).

The spelling of 1000020734 in words is "one billion, twenty thousand, seven hundred thirty-four".