1864740 has 24 divisors (see below), whose sum is σ = 5221440. Its totient is φ = 497248.

The previous prime is 1864739. The next prime is 1864769. The reversal of 1864740 is 474681.

It is a hoax number, since the sum of its digits (30) coincides with the sum of the digits of its distinct prime factors.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a junction number, because it is equal to n+sod(n) for n = 1864698 and 1864707.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 15480 + ... + 15599.

It is an arithmetic number, because the mean of its divisors is an integer number (217560).

2^1864740 is an apocalyptic number.

1864740 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1864740 is an abundant number, since it is smaller than the sum of its proper divisors (3356700).

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

1864740 is a wasteful number, since it uses less digits than its factorization.

1864740 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 31091 (or 31089 counting only the distinct ones).

The product of its (nonzero) digits is 5376, while the sum is 30.

The square root of 1864740 is about 1365.5548322935. The cubic root of 1864740 is about 123.0852736722.

The spelling of 1864740 in words is "one million, eight hundred sixty-four thousand, seven hundred forty".