212503380 has 24 divisors (see below), whose sum is σ = 595009632. Its totient is φ = 56667552.

The previous prime is 212503363. The next prime is 212503411. The reversal of 212503380 is 83305212.

It is a super-2 number, since 2×212503380² = 90315373022848800, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 212503380.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1770802 + ... + 1770921.

It is an arithmetic number, because the mean of its divisors is an integer number (24792068).

Almost surely, 2^212503380 is an apocalyptic number.

212503380 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

212503380 is an abundant number, since it is smaller than the sum of its proper divisors (382506252).

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

212503380 is a wasteful number, since it uses less digits than its factorization.

212503380 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3541735 (or 3541733 counting only the distinct ones).

The product of its (nonzero) digits is 1440, while the sum is 24.

The square root of 212503380 is about 14577.4956696958. The cubic root of 212503380 is about 596.7447598474.

Adding to 212503380 its reverse (83305212), we get a palindrome (295808592).

The spelling of 212503380 in words is "two hundred twelve million, five hundred three thousand, three hundred eighty".