213451420 has 48 divisors (see below), whose sum is σ = 551694528. Its totient is φ = 67553280.

The previous prime is 213451387. The next prime is 213451421. The reversal of 213451420 is 24154312.

It is a junction number, because it is equal to n+sod(n) for n = 213451391 and 213451400.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (213451421) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 56821 + ... + 60460.

It is an arithmetic number, because the mean of its divisors is an integer number (11493636).

Almost surely, 2^213451420 is an apocalyptic number.

213451420 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

213451420 is an abundant number, since it is smaller than the sum of its proper divisors (338243108).

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

213451420 is a wasteful number, since it uses less digits than its factorization.

213451420 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 117310 (or 117308 counting only the distinct ones).

The product of its (nonzero) digits is 960, while the sum is 22.

The square root of 213451420 is about 14609.9767282498. The cubic root of 213451420 is about 597.6308613194.

The spelling of 213451420 in words is "two hundred thirteen million, four hundred fifty-one thousand, four hundred twenty".