513494044 has 144 divisors (see below), whose sum is σ = 1188311040. Its totient is φ = 189573120.

The previous prime is 513494017. The next prime is 513494077. The reversal of 513494044 is 440494315.

It is a super-2 number, since 2×513494044² = 527352266446947872, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (34).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 5769552 + ... + 5769640.

It is an arithmetic number, because the mean of its divisors is an integer number (8252160).

Almost surely, 2^513494044 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 513494044, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (594155520).

513494044 is an abundant number, since it is smaller than the sum of its proper divisors (674816996).

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

513494044 is a wasteful number, since it uses less digits than its factorization.

513494044 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 188 (or 169 counting only the distinct ones).

The product of its (nonzero) digits is 34560, while the sum is 34.

The square root of 513494044 is about 22660.4069689845. The cubic root of 513494044 is about 800.7773922486. Note that the first 3 decimals are identical.

The spelling of 513494044 in words is "five hundred thirteen million, four hundred ninety-four thousand, forty-four".