501113428 has 6 divisors (see below), whose sum is σ = 876948506. Its totient is φ = 250556712.

The previous prime is 501113423. The next prime is 501113441. The reversal of 501113428 is 824311105.

It can be written as a sum of positive squares in only one way, i.e., 329712964 + 171400464 = 18158^2 + 13092^2 .

It is a super-2 number, since 2×501113428² = 502229335443822368, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (501113423) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 62639175 + ... + 62639182.

Almost surely, 2^501113428 is an apocalyptic number.

It is an amenable number.

501113428 is a deficient number, since it is larger than the sum of its proper divisors (375835078).

501113428 is a wasteful number, since it uses less digits than its factorization.

501113428 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 125278361 (or 125278359 counting only the distinct ones).

The product of its (nonzero) digits is 960, while the sum is 25.

The square root of 501113428 is about 22385.5629368573. The cubic root of 501113428 is about 794.2892414647.

The spelling of 501113428 in words is "five hundred one million, one hundred thirteen thousand, four hundred twenty-eight".