1921464 has 24 divisors (see below), whose sum is σ = 5204160. Its totient is φ = 640464.

The previous prime is 1921457. The next prime is 1921477. The reversal of 1921464 is 4641291.

It is a tau number, because it is divible by the number of its divisors (24).

It is a nude number because it is divisible by every one of its digits.

It is an Ulam number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 13272 + ... + 13415.

It is an arithmetic number, because the mean of its divisors is an integer number (216840).

2^1921464 is an apocalyptic number.

It is an amenable number.

1921464 is an abundant number, since it is smaller than the sum of its proper divisors (3282696).

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

1921464 is a wasteful number, since it uses less digits than its factorization.

1921464 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 26699 (or 26692 counting only the distinct ones).

The product of its digits is 1728, while the sum is 27.

The square root of 1921464 is about 1386.1688208873. The cubic root of 1921464 is about 124.3208824095.

The spelling of 1921464 in words is "one million, nine hundred twenty-one thousand, four hundred sixty-four".