234780240 has 80 divisors (see below), whose sum is σ = 729292608. Its totient is φ = 62481408.

The previous prime is 234780239. The next prime is 234780253. The reversal of 234780240 is 42087432.

It is a tau number, because it is divible by the number of its divisors (80).

It is a super-2 number, since 2×234780240² = 110243522188915200, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a junction number, because it is equal to n+sod(n) for n = 234780198 and 234780207.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 226764 + ... + 227796.

Almost surely, 2^234780240 is an apocalyptic number.

234780240 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

234780240 is an abundant number, since it is smaller than the sum of its proper divisors (494512368).

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

234780240 is a wasteful number, since it uses less digits than its factorization.

234780240 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1996 (or 1990 counting only the distinct ones).

The product of its (nonzero) digits is 10752, while the sum is 30.

The square root of 234780240 is about 15322.5402593695. The cubic root of 234780240 is about 616.9081589679.

The spelling of 234780240 in words is "two hundred thirty-four million, seven hundred eighty thousand, two hundred forty".