1000230640 has 40 divisors (see below), whose sum is σ = 2339011008. Its totient is φ = 397774080.

The previous prime is 1000230617. The next prime is 1000230653. The reversal of 1000230640 is 460320001.

It is a tau number, because it is divible by the number of its divisors (40).

It is a super-2 number, since 2×1000230640² = 2000922666389619200, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (16).

It is a congruent number.

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, 22296 + ... + 49975.

Almost surely, 2^1000230640 is an apocalyptic number.

1000230640 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1000230640 is an abundant number, since it is smaller than the sum of its proper divisors (1338780368).

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

1000230640 is a wasteful number, since it uses less digits than its factorization.

1000230640 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 72457 (or 72451 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 16.

The square root of 1000230640 is about 31626.4231300348. The cubic root of 1000230640 is about 1000.0768740902.

Adding to 1000230640 its reverse (460320001), we get a palindrome (1460550641).

The spelling of 1000230640 in words is "one billion, two hundred thirty thousand, six hundred forty".