1967440 has 20 divisors (see below), whose sum is σ = 4574484. Its totient is φ = 786944.

The previous prime is 1967429. The next prime is 1967453. The reversal of 1967440 is 447691.

It can be written as a sum of positive squares in 2 ways, for example, as 419904 + 1547536 = 648^2 + 1244^2 .

It is a tau number, because it is divible by the number of its divisors (20).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 12217 + ... + 12376.

2^1967440 is an apocalyptic number.

1967440 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1967440 is an abundant number, since it is smaller than the sum of its proper divisors (2607044).

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

1967440 is a wasteful number, since it uses less digits than its factorization.

1967440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 24606 (or 24600 counting only the distinct ones).

The product of its (nonzero) digits is 6048, while the sum is 31.

The square root of 1967440 is about 1402.6546260573. The cubic root of 1967440 is about 125.3046436017.

The spelling of 1967440 in words is "one million, nine hundred sixty-seven thousand, four hundred forty".