4157890 has 16 divisors (see below), whose sum is σ = 8164800. Its totient is φ = 1511920.

The previous prime is 4157887. The next prime is 4157891. The reversal of 4157890 is 987514.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (4157891) 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 7 ways as a sum of consecutive naturals, for example, 18790 + ... + 19009.

It is an arithmetic number, because the mean of its divisors is an integer number (510300).

Almost surely, 2^4157890 is an apocalyptic number.

4157890 is a deficient number, since it is larger than the sum of its proper divisors (4006910).

4157890 is a wasteful number, since it uses less digits than its factorization.

4157890 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 37817.

The product of its (nonzero) digits is 10080, while the sum is 34.

The square root of 4157890 is about 2039.0904835245. The cubic root of 4157890 is about 160.8018342984.

The spelling of 4157890 in words is "four million, one hundred fifty-seven thousand, eight hundred ninety".