240448428 has 72 divisors (see below), whose sum is σ = 677214720. Its totient is φ = 71307360.

The previous prime is 240448409. The next prime is 240448433. The reversal of 240448428 is 824844042.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a junction number, because it is equal to n+sod(n) for n = 240448392 and 240448401.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 12153 + ... + 25071.

It is an arithmetic number, because the mean of its divisors is an integer number (9405760).

Almost surely, 2^240448428 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 240448428, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (338607360).

240448428 is an abundant number, since it is smaller than the sum of its proper divisors (436766292).

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

240448428 is a wasteful number, since it uses less digits than its factorization.

240448428 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12987 (or 12982 counting only the distinct ones).

The product of its (nonzero) digits is 65536, while the sum is 36.

The square root of 240448428 is about 15506.3995821080. The cubic root of 240448428 is about 621.8333076196.

The spelling of 240448428 in words is "two hundred forty million, four hundred forty-eight thousand, four hundred twenty-eight".