164021244 has 12 divisors (see below), whose sum is σ = 382716264. Its totient is φ = 54673744.

The previous prime is 164021237. The next prime is 164021267. The reversal of 164021244 is 442120461.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (12).

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, 6834207 + ... + 6834230.

It is an arithmetic number, because the mean of its divisors is an integer number (31893022).

Almost surely, 2^164021244 is an apocalyptic number.

It is an amenable number.

164021244 is an abundant number, since it is smaller than the sum of its proper divisors (218695020).

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

164021244 is a wasteful number, since it uses less digits than its factorization.

164021244 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13668444 (or 13668442 counting only the distinct ones).

The product of its (nonzero) digits is 1536, while the sum is 24.

The square root of 164021244 is about 12807.0778868562. The cubic root of 164021244 is about 547.3940012888.

It can be divided in two parts, 16402124 and 4, that added together give a triangular number (16402128 = T₅₇₂₇).

The spelling of 164021244 in words is "one hundred sixty-four million, twenty-one thousand, two hundred forty-four".