920240 has 20 divisors (see below), whose sum is σ = 2139744. Its totient is φ = 368064.

The previous prime is 920233. The next prime is 920263. The reversal of 920240 is 42029.

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

It is a hoax number, since the sum of its digits (17) coincides with the sum of the digits of its distinct prime factors.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 920240.

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, 5672 + ... + 5831.

2⁹²⁰²⁴⁰ is an apocalyptic number.

It is an amenable number.

920240 is an abundant number, since it is smaller than the sum of its proper divisors (1219504).

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

920240 is a wasteful number, since it uses less digits than its factorization.

920240 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11516 (or 11510 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 17.

The square root of 920240 is about 959.2914051528. The cubic root of 920240 is about 97.2673391807.

Adding to 920240 its reverse (42029), we get a palindrome (962269).

The spelling of 920240 in words is "nine hundred twenty thousand, two hundred forty".