240870381 has 16 divisors (see below), whose sum is σ = 323661504. Its totient is φ = 159335424.

The previous prime is 240870373. The next prime is 240870439. The reversal of 240870381 is 183078042.

It is not a de Polignac number, because 240870381 - 2³ = 240870373 is a prime.

It is a super-2 number, since 2×240870381² = 116037080886170322, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (240872381) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 392631 + ... + 393243.

It is an arithmetic number, because the mean of its divisors is an integer number (20228844).

Almost surely, 2^240870381 is an apocalyptic number.

It is an amenable number.

240870381 is a deficient number, since it is larger than the sum of its proper divisors (82791123).

240870381 is a wasteful number, since it uses less digits than its factorization.

240870381 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1420.

The product of its (nonzero) digits is 10752, while the sum is 33.

The square root of 240870381 is about 15519.9993878866. Note that the first 3 decimals coincide. The cubic root of 240870381 is about 622.1968382372.

The spelling of 240870381 in words is "two hundred forty million, eight hundred seventy thousand, three hundred eighty-one".