511214340 has 96 divisors (see below), whose sum is σ = 1761742080. Its totient is φ = 107859456.

The previous prime is 511214279. The next prime is 511214351. The reversal of 511214340 is 43412115.

It is a super-4 number, since 4×511214340⁴ (a number of 36 digits) contains 4444 as substring. Note that it is a super-d number also for d = 2.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 41355 + ... + 52274.

It is an arithmetic number, because the mean of its divisors is an integer number (18351480).

Almost surely, 2^511214340 is an apocalyptic number.

It is an amenable number.

511214340 is an abundant number, since it is smaller than the sum of its proper divisors (1250527740).

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

511214340 is a wasteful number, since it uses less digits than its factorization.

511214340 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 93661 (or 93659 counting only the distinct ones).

The product of its (nonzero) digits is 480, while the sum is 21.

The square root of 511214340 is about 22610.0495355495. The cubic root of 511214340 is about 799.5905926011.

Adding to 511214340 its reverse (43412115), we get a palindrome (554626455).

The spelling of 511214340 in words is "five hundred eleven million, two hundred fourteen thousand, three hundred forty".