164102440 has 16 divisors (see below), whose sum is σ = 369230580. Its totient is φ = 65640960.

The previous prime is 164102431. The next prime is 164102441. The reversal of 164102440 is 44201461.

It can be written as a sum of positive squares in 2 ways, for example, as 149768644 + 14333796 = 12238^2 + 3786^2 .

It is a super-2 number, since 2×164102440² = 53859221627907200, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (164102441) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2051241 + ... + 2051320.

Almost surely, 2^164102440 is an apocalyptic number.

164102440 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

164102440 is an abundant number, since it is smaller than the sum of its proper divisors (205128140).

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

164102440 is a wasteful number, since it uses less digits than its factorization.

164102440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4102572 (or 4102568 counting only the distinct ones).

The product of its (nonzero) digits is 768, while the sum is 22.

The square root of 164102440 is about 12810.2474605294. The cubic root of 164102440 is about 547.4843124992.

The spelling of 164102440 in words is "one hundred sixty-four million, one hundred two thousand, four hundred forty".