1872420 has 48 divisors (see below), whose sum is σ = 5721408. Its totient is φ = 453760.

The previous prime is 1872419. The next prime is 1872421. The reversal of 1872420 is 242781.

It is an interprime number because it is at equal distance from previous prime (1872419) and next prime (1872421).

It is not an unprimeable number, because it can be changed into a prime (1872421) 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, 759 + ... + 2078.

It is an arithmetic number, because the mean of its divisors is an integer number (119196).

2^1872420 is an apocalyptic number.

1872420 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1872420 is an abundant number, since it is smaller than the sum of its proper divisors (3848988).

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

1872420 is a wasteful number, since it uses less digits than its factorization.

1872420 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2860 (or 2858 counting only the distinct ones).

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

The square root of 1872420 is about 1368.3639866644. The cubic root of 1872420 is about 123.2540192916.

The spelling of 1872420 in words is "one million, eight hundred seventy-two thousand, four hundred twenty".