4912640 has 80 divisors (see below), whose sum is σ = 12521520. Its totient is φ = 1843200.

The previous prime is 4912627. The next prime is 4912667. The reversal of 4912640 is 462194.

It is a tau number, because it is divible by the number of its divisors (80).

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, 48590 + ... + 48690.

It is an arithmetic number, because the mean of its divisors is an integer number (156519).

Almost surely, 2^4912640 is an apocalyptic number.

4912640 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

4912640 is the 1280-th octagonal number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 4912640, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (6260760).

4912640 is an abundant number, since it is smaller than the sum of its proper divisors (7608880).

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

4912640 is a wasteful number, since it uses less digits than its factorization.

4912640 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 143 (or 127 counting only the distinct ones).

The product of its (nonzero) digits is 1728, while the sum is 26.

The square root of 4912640 is about 2216.4476082236. The cubic root of 4912640 is about 169.9958476494.

The spelling of 4912640 in words is "four million, nine hundred twelve thousand, six hundred forty".