1000023020 has 24 divisors (see below), whose sum is σ = 2134477968. Its totient is φ = 393451200.

The previous prime is 1000022971. The next prime is 1000023041. The reversal of 1000023020 is 203200001.

It is a junction number, because it is equal to n+sod(n) for n = 1000022989 and 1000023007.

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, 408626 + ... + 411065.

It is an arithmetic number, because the mean of its divisors is an integer number (88936582).

Almost surely, 2^1000023020 is an apocalyptic number.

1000023020 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1000023020 is an abundant number, since it is smaller than the sum of its proper divisors (1134454948).

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

1000023020 is a wasteful number, since it uses less digits than its factorization.

1000023020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 819761 (or 819759 counting only the distinct ones).

The product of its (nonzero) digits is 12, while the sum is 8.

The square root of 1000023020 is about 31623.1405777478. The cubic root of 1000023020 is about 1000.0076732745.

Adding to 1000023020 its reverse (203200001), we get a palindrome (1203223021).

The spelling of 1000023020 in words is "one billion, twenty-three thousand, twenty".