921340 has 24 divisors (see below), whose sum is σ = 2211552. Its totient is φ = 315840.

The previous prime is 921331. The next prime is 921353. The reversal of 921340 is 43129.

It is a congruent number.

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, 3151 + ... + 3430.

It is an arithmetic number, because the mean of its divisors is an integer number (92148).

2⁹²¹³⁴⁰ is an apocalyptic number.

It is an amenable number.

921340 is an abundant number, since it is smaller than the sum of its proper divisors (1290212).

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

921340 is a wasteful number, since it uses less digits than its factorization.

921340 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6597 (or 6595 counting only the distinct ones).

The product of its (nonzero) digits is 216, while the sum is 19.

The square root of 921340 is about 959.8645737811. The cubic root of 921340 is about 97.3060796071.

Adding to 921340 its reverse (43129), we get a palindrome (964469).

The spelling of 921340 in words is "nine hundred twenty-one thousand, three hundred forty".