4354026640 has 40 divisors (see below), whose sum is σ = 10126193400. Its totient is φ = 1741080576.

The previous prime is 4354026637. The next prime is 4354026659. The reversal of 4354026640 is 466204534.

It can be written as a sum of positive squares in 4 ways, for example, as 14379264 + 4339647376 = 3792^2 + 65876^2 .

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

It is a junction number, because it is equal to n+sod(n) for n = 4354026596 and 4354026605.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 355336 + ... + 367384.

It is an arithmetic number, because the mean of its divisors is an integer number (253154835).

Almost surely, 2^4354026640 is an apocalyptic number.

4354026640 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

4354026640 is an abundant number, since it is smaller than the sum of its proper divisors (5772166760).

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

4354026640 is a wasteful number, since it uses less digits than its factorization.

4354026640 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16579 (or 16573 counting only the distinct ones).

The product of its (nonzero) digits is 69120, while the sum is 34.

The square root of 4354026640 is about 65985.0486095146. The cubic root of 4354026640 is about 1632.9154342040.

The spelling of 4354026640 in words is "four billion, three hundred fifty-four million, twenty-six thousand, six hundred forty".