212487072 has 48 divisors (see below), whose sum is σ = 637463232. Its totient is φ = 60710400.

The previous prime is 212487061. The next prime is 212487139. The reversal of 212487072 is 270784212.

It is a tau number, because it is divible by the number of its divisors (48).

It is a Smith number, since the sum of its digits (33) coincides with the sum of the digits of its prime factors.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 157429 + ... + 158772.

It is an arithmetic number, because the mean of its divisors is an integer number (13280484).

Almost surely, 2^212487072 is an apocalyptic number.

It is an amenable number.

212487072 is an abundant number, since it is smaller than the sum of its proper divisors (424976160).

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

212487072 is a wasteful number, since it uses less digits than its factorization.

212487072 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 316221 (or 316213 counting only the distinct ones).

The product of its (nonzero) digits is 12544, while the sum is 33.

The square root of 212487072 is about 14576.9363036270. The cubic root of 212487072 is about 596.7294942667.

The spelling of 212487072 in words is "two hundred twelve million, four hundred eighty-seven thousand, seventy-two".