240213428 has 96 divisors (see below), whose sum is σ = 556953600. Its totient is φ = 87993216.

The previous prime is 240213427. The next prime is 240213431. The reversal of 240213428 is 824312042.

It is a super-2 number, since 2×240213428² = 115404981983022368, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (26).

It is a junction number, because it is equal to n+sod(n) for n = 240213397 and 240213406.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (240213427) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 324683 + ... + 325421.

It is an arithmetic number, because the mean of its divisors is an integer number (5801600).

Almost surely, 2^240213428 is an apocalyptic number.

240213428 is a gapful number since it is divisible by the number (28) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 240213428, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (278476800).

240213428 is an abundant number, since it is smaller than the sum of its proper divisors (316740172).

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

240213428 is a wasteful number, since it uses less digits than its factorization.

240213428 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 829 (or 827 counting only the distinct ones).

The product of its (nonzero) digits is 3072, while the sum is 26.

The square root of 240213428 is about 15498.8202131646. The cubic root of 240213428 is about 621.6306606169.

The spelling of 240213428 in words is "two hundred forty million, two hundred thirteen thousand, four hundred twenty-eight".