218010402 has 24 divisors (see below), whose sum is σ = 472627584. Its totient is φ = 72628344.

The previous prime is 218010391. The next prime is 218010409. The reversal of 218010402 is 204010812.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is not an unprimeable number, because it can be changed into a prime (218010409) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 58363 + ... + 61985.

It is an arithmetic number, because the mean of its divisors is an integer number (19692816).

Almost surely, 2^218010402 is an apocalyptic number.

218010402 is an abundant number, since it is smaller than the sum of its proper divisors (254617182).

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

218010402 is a wasteful number, since it uses less digits than its factorization.

218010402 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6974 (or 6971 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 18.

The square root of 218010402 is about 14765.1753122000. The cubic root of 218010402 is about 601.8557378113.

The spelling of 218010402 in words is "two hundred eighteen million, ten thousand, four hundred two".