2471820 has 48 divisors (see below), whose sum is σ = 7455840. Its totient is φ = 608256.

The previous prime is 2471813. The next prime is 2471827. The reversal of 2471820 is 281742.

It is an interprime number because it is at equal distance from previous prime (2471813) and next prime (2471827).

It is a super-2 number, since 2×2471820² = 12219788224800, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2471827) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 805 + ... + 2364.

It is an arithmetic number, because the mean of its divisors is an integer number (155330).

2^2471820 is an apocalyptic number.

2471820 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2471820 is an abundant number, since it is smaller than the sum of its proper divisors (4984020).

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

2471820 is a wasteful number, since it uses less digits than its factorization.

2471820 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3194 (or 3192 counting only the distinct ones).

The product of its (nonzero) digits is 896, while the sum is 24.

The square root of 2471820 is about 1572.2022770623. The cubic root of 2471820 is about 135.2090041037.

The spelling of 2471820 in words is "two million, four hundred seventy-one thousand, eight hundred twenty".