240428 has 6 divisors (see below), whose sum is σ = 420756. Its totient is φ = 120212.

The previous prime is 240421. The next prime is 240433. The reversal of 240428 is 824042.

240428 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is not an unprimeable number, because it can be changed into a prime (240421) by changing a digit.

240428 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 30050 + ... + 30057.

It is an arithmetic number, because the mean of its divisors is an integer number (70126).

2²⁴⁰⁴²⁸ is an apocalyptic number.

It is an amenable number.

240428 is a deficient number, since it is larger than the sum of its proper divisors (180328).

240428 is a wasteful number, since it uses less digits than its factorization.

240428 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 60111 (or 60109 counting only the distinct ones).

The product of its (nonzero) digits is 512, while the sum is 20.

The square root of 240428 is about 490.3345796494. The cubic root of 240428 is about 62.1815697231.

The spelling of 240428 in words is "two hundred forty thousand, four hundred twenty-eight".