513447420 has 48 divisors (see below), whose sum is σ = 1484034048. Its totient is φ = 132502080.

The previous prime is 513447419. The next prime is 513447427. The reversal of 513447420 is 24744315.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (513447427) 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, 136164 + ... + 139883.

It is an arithmetic number, because the mean of its divisors is an integer number (30917376).

Almost surely, 2^513447420 is an apocalyptic number.

It is an amenable number.

513447420 is an abundant number, since it is smaller than the sum of its proper divisors (970586628).

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

513447420 is a wasteful number, since it uses less digits than its factorization.

513447420 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 276090 (or 276088 counting only the distinct ones).

The product of its (nonzero) digits is 13440, while the sum is 30.

The square root of 513447420 is about 22659.3781909390. The cubic root of 513447420 is about 800.7531553072.

The spelling of 513447420 in words is "five hundred thirteen million, four hundred forty-seven thousand, four hundred twenty".