1872740 has 12 divisors (see below), whose sum is σ = 3932796. Its totient is φ = 749088.

The previous prime is 1872727. The next prime is 1872743. The reversal of 1872740 is 472781.

It can be written as a sum of positive squares in 2 ways, for example, as 1493284 + 379456 = 1222^2 + 616^2 .

It is not an unprimeable number, because it can be changed into a prime (1872743) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 46799 + ... + 46838.

It is an arithmetic number, because the mean of its divisors is an integer number (327733).

2^1872740 is an apocalyptic number.

1872740 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1872740 is an abundant number, since it is smaller than the sum of its proper divisors (2060056).

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

1872740 is a wasteful number, since it uses less digits than its factorization.

1872740 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 93646 (or 93644 counting only the distinct ones).

The product of its (nonzero) digits is 3136, while the sum is 29.

The square root of 1872740 is about 1368.4809096221. The cubic root of 1872740 is about 123.2610403374.

It can be divided in two parts, 1872 and 740, that multiplied together give a triangular number (1385280 = T₁₆₆₄).

The spelling of 1872740 in words is "one million, eight hundred seventy-two thousand, seven hundred forty".