235289040 has 80 divisors (see below), whose sum is σ = 833601408. Its totient is φ = 53779968.

The previous prime is 235288987. The next prime is 235289071. The reversal of 235289040 is 40982532.

It is a happy number.

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

It is a junction number, because it is equal to n+sod(n) for n = 235288992 and 235289010.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 68347 + ... + 71706.

Almost surely, 2^235289040 is an apocalyptic number.

235289040 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

235289040 is an abundant number, since it is smaller than the sum of its proper divisors (598312368).

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

235289040 is a wasteful number, since it uses less digits than its factorization.

235289040 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 140076 (or 140070 counting only the distinct ones).

The product of its (nonzero) digits is 17280, while the sum is 33.

The square root of 235289040 is about 15339.1342650099. The cubic root of 235289040 is about 617.3534781054.

The spelling of 235289040 in words is "two hundred thirty-five million, two hundred eighty-nine thousand, forty".