7026400840 has 16 divisors (see below), whose sum is σ = 15809401980. Its totient is φ = 2810560320.

The previous prime is 7026400831. The next prime is 7026400841. The reversal of 7026400840 is 480046207.

It can be written as a sum of positive squares in 2 ways, for example, as 6978597444 + 47803396 = 83538^2 + 6914^2 .

It is not an unprimeable number, because it can be changed into a prime (7026400841) 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, 87829971 + ... + 87830050.

Almost surely, 2^7026400840 is an apocalyptic number.

It is an amenable number.

7026400840 is an abundant number, since it is smaller than the sum of its proper divisors (8783001140).

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

7026400840 is a wasteful number, since it uses less digits than its factorization.

7026400840 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 175660032 (or 175660028 counting only the distinct ones).

The product of its (nonzero) digits is 10752, while the sum is 31.

The square root of 7026400840 is about 83823.6293654719. The cubic root of 7026400840 is about 1915.3330699769. Note that the first 3 decimals are identical.

The spelling of 7026400840 in words is "seven billion, twenty-six million, four hundred thousand, eight hundred forty".