213545424 has 20 divisors (see below), whose sum is σ = 551659136. Its totient is φ = 71181792.

The previous prime is 213545419. The next prime is 213545447. The reversal of 213545424 is 424545312.

213545424 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×213545424² = 91203296222679552, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 213545391 and 213545400.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2224384 + ... + 2224479.

Almost surely, 2^213545424 is an apocalyptic number.

213545424 is a gapful number since it is divisible by the number (24) formed by its first and last digit.

It is an amenable number.

213545424 is an abundant number, since it is smaller than the sum of its proper divisors (338113712).

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

213545424 is a wasteful number, since it uses less digits than its factorization.

213545424 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4448874 (or 4448868 counting only the distinct ones).

The product of its digits is 19200, while the sum is 30.

The square root of 213545424 is about 14613.1934908151. The cubic root of 213545424 is about 597.7185806489.

The spelling of 213545424 in words is "two hundred thirteen million, five hundred forty-five thousand, four hundred twenty-four".