214787540 has 24 divisors (see below), whose sum is σ = 492059232. Its totient is φ = 78104480.

The previous prime is 214787519. The next prime is 214787563. The reversal of 214787540 is 45787412.

It is a super-2 number, since 2×214787540² = 92267374678503200, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 214787494 and 214787503.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 487934 + ... + 488373.

It is an arithmetic number, because the mean of its divisors is an integer number (20502468).

Almost surely, 2^214787540 is an apocalyptic number.

214787540 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

214787540 is an abundant number, since it is smaller than the sum of its proper divisors (277271692).

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

214787540 is a wasteful number, since it uses less digits than its factorization.

214787540 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 976327 (or 976325 counting only the distinct ones).

The product of its (nonzero) digits is 62720, while the sum is 38.

The square root of 214787540 is about 14655.6316820531. The cubic root of 214787540 is about 598.8752447119.

The spelling of 214787540 in words is "two hundred fourteen million, seven hundred eighty-seven thousand, five hundred forty".