1672740 has 36 divisors (see below), whose sum is σ = 5074524. Its totient is φ = 446016.

The previous prime is 1672663. The next prime is 1672747. The reversal of 1672740 is 472761.

It can be written as a sum of positive squares in 2 ways, for example, as 331776 + 1340964 = 576^2 + 1158^2 .

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

It is not an unprimeable number, because it can be changed into a prime (1672747) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 4467 + ... + 4826.

It is an arithmetic number, because the mean of its divisors is an integer number (140959).

2^1672740 is an apocalyptic number.

1672740 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1672740 is an abundant number, since it is smaller than the sum of its proper divisors (3401784).

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

1672740 is a wasteful number, since it uses less digits than its factorization.

1672740 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9308 (or 9303 counting only the distinct ones).

The product of its (nonzero) digits is 2352, while the sum is 27.

The square root of 1672740 is about 1293.3445016700. The cubic root of 1672740 is about 118.7069502309.

The spelling of 1672740 in words is "one million, six hundred seventy-two thousand, seven hundred forty".