4248726640 has 20 divisors (see below), whose sum is σ = 9878289624. Its totient is φ = 1699490624.

The previous prime is 4248726617. The next prime is 4248726641. The reversal of 4248726640 is 466278424.

It is a tau number, because it is divible by the number of its divisors (20).

It is a super-2 number, since 2×4248726640² = 36103356122891379200, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4248726641) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 26554462 + ... + 26554621.

Almost surely, 2^4248726640 is an apocalyptic number.

4248726640 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

4248726640 is an abundant number, since it is smaller than the sum of its proper divisors (5629562984).

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

4248726640 is a wasteful number, since it uses less digits than its factorization.

4248726640 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 53109096 (or 53109090 counting only the distinct ones).

The product of its (nonzero) digits is 516096, while the sum is 43.

The square root of 4248726640 is about 65182.2570950101. The cubic root of 4248726640 is about 1619.6441122411.

The spelling of 4248726640 in words is "four billion, two hundred forty-eight million, seven hundred twenty-six thousand, six hundred forty".