4278624 has 48 divisors (see below), whose sum is σ = 12837888. Its totient is φ = 1222272.

The previous prime is 4278619. The next prime is 4278641. The reversal of 4278624 is 4268724.

4278624 = T₇ + T₈ + ... + T₂₉₄.

It is a tau number, because it is divible by the number of its divisors (48).

It is a nude number because it is divisible by every one of its digits.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2512 + ... + 3855.

It is an arithmetic number, because the mean of its divisors is an integer number (267456).

Almost surely, 2^4278624 is an apocalyptic number.

It is an amenable number.

4278624 is an abundant number, since it is smaller than the sum of its proper divisors (8559264).

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

4278624 is a wasteful number, since it uses less digits than its factorization.

4278624 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6387 (or 6379 counting only the distinct ones).

The product of its digits is 21504, while the sum is 33.

The square root of 4278624 is about 2068.4835024723. The cubic root of 4278624 is about 162.3434263053.

The spelling of 4278624 in words is "four million, two hundred seventy-eight thousand, six hundred twenty-four".