4157820 has 36 divisors (see below), whose sum is σ = 12612600. Its totient is φ = 1108704.

The previous prime is 4157807. The next prime is 4157833. The reversal of 4157820 is 287514.

It is an interprime number because it is at equal distance from previous prime (4157807) and next prime (4157833).

It is a tau number, because it is divible by the number of its divisors (36).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 11370 + ... + 11729.

It is an arithmetic number, because the mean of its divisors is an integer number (350350).

Almost surely, 2^4157820 is an apocalyptic number.

It is an amenable number.

4157820 is an abundant number, since it is smaller than the sum of its proper divisors (8454780).

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

4157820 is a wasteful number, since it uses less digits than its factorization.

4157820 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23114 (or 23109 counting only the distinct ones).

The product of its (nonzero) digits is 2240, while the sum is 27.

The square root of 4157820 is about 2039.0733189368. The cubic root of 4157820 is about 160.8009319022.

The spelling of 4157820 in words is "four million, one hundred fifty-seven thousand, eight hundred twenty".