4046640 has 80 divisors (see below), whose sum is σ = 13519968. Its totient is φ = 995328.

The previous prime is 4046593. The next prime is 4046657. The reversal of 4046640 is 466404.

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

It is a Harshad number since it is a multiple of its sum of digits (24).

It is a self number, because there is not a number n which added to its sum of digits gives 4046640.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2472 + ... + 3768.

Almost surely, 2^4046640 is an apocalyptic number.

4046640 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 4046640, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (6759984).

4046640 is an abundant number, since it is smaller than the sum of its proper divisors (9473328).

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

4046640 is a wasteful number, since it uses less digits than its factorization.

4046640 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1326 (or 1320 counting only the distinct ones).

The product of its (nonzero) digits is 2304, while the sum is 24.

The square root of 4046640 is about 2011.6262078229. The cubic root of 4046640 is about 159.3546925298.

The spelling of 4046640 in words is "four million, forty-six thousand, six hundred forty".