4002478 has 8 divisors (see below), whose sum is σ = 6012360. Its totient is φ = 1998360.

The previous prime is 4002457. The next prime is 4002499. The reversal of 4002478 is 8742004.

It is an interprime number because it is at equal distance from previous prime (4002457) and next prime (4002499).

It is a sphenic number, since it is the product of 3 distinct primes.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1488 + ... + 3196.

It is an arithmetic number, because the mean of its divisors is an integer number (751545).

Almost surely, 2^4002478 is an apocalyptic number.

4002478 is a deficient number, since it is larger than the sum of its proper divisors (2009882).

4002478 is a wasteful number, since it uses less digits than its factorization.

4002478 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2882.

The product of its (nonzero) digits is 1792, while the sum is 25.

The square root of 4002478 is about 2000.6194040846. The cubic root of 4002478 is about 158.7728782618.

The spelling of 4002478 in words is "four million, two thousand, four hundred seventy-eight".