1000806420 has 48 divisors (see below), whose sum is σ = 2855139840. Its totient is φ = 261845376.

The previous prime is 1000806419. The next prime is 1000806427. The reversal of 1000806420 is 246080001.

It is a super-2 number, since 2×1000806420² = 2003226980626432800, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1000806427) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 154180 + ... + 160539.

It is an arithmetic number, because the mean of its divisors is an integer number (59482080).

Almost surely, 2^1000806420 is an apocalyptic number.

1000806420 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1000806420 is an abundant number, since it is smaller than the sum of its proper divisors (1854333420).

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

1000806420 is a wasteful number, since it uses less digits than its factorization.

1000806420 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 314784 (or 314782 counting only the distinct ones).

The product of its (nonzero) digits is 384, while the sum is 21.

The square root of 1000806420 is about 31635.5246518846. The cubic root of 1000806420 is about 1000.2687344420.

Adding to 1000806420 its reverse (246080001), we get a palindrome (1246886421).

The spelling of 1000806420 in words is "one billion, eight hundred six thousand, four hundred twenty".