528978413 has 4 divisors (see below), whose sum is σ = 529990368. Its totient is φ = 527966460.

The previous prime is 528978407. The next prime is 528978469. The reversal of 528978413 is 314879825.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 528978413 - 2⁶ = 528978349 is a prime.

It is a super-2 number, since 2×528978413² = 559636322839997138, which contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (528978493) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 505193 + ... + 506238.

It is an arithmetic number, because the mean of its divisors is an integer number (132497592).

Almost surely, 2^528978413 is an apocalyptic number.

It is an amenable number.

528978413 is a deficient number, since it is larger than the sum of its proper divisors (1011955).

528978413 is a wasteful number, since it uses less digits than its factorization.

528978413 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1011954.

The product of its digits is 483840, while the sum is 47.

The square root of 528978413 is about 22999.5307126037. The cubic root of 528978413 is about 808.7469387148.

The spelling of 528978413 in words is "five hundred twenty-eight million, nine hundred seventy-eight thousand, four hundred thirteen".