4078890 has 32 divisors (see below), whose sum is σ = 10877760. Its totient is φ = 1087632.

The previous prime is 4078883. The next prime is 4078891. The reversal of 4078890 is 988704.

It is not an unprimeable number, because it can be changed into a prime (4078891) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 7284 + ... + 7823.

It is an arithmetic number, because the mean of its divisors is an integer number (339930).

Almost surely, 2^4078890 is an apocalyptic number.

4078890 is an abundant number, since it is smaller than the sum of its proper divisors (6798870).

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

4078890 is a wasteful number, since it uses less digits than its factorization.

4078890 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15123 (or 15117 counting only the distinct ones).

The product of its (nonzero) digits is 16128, while the sum is 36.

The square root of 4078890 is about 2019.6262030386. The cubic root of 4078890 is about 159.7769026085.

The spelling of 4078890 in words is "four million, seventy-eight thousand, eight hundred ninety".