201418428 has 12 divisors (see below), whose sum is σ = 469976360. Its totient is φ = 67139472.

The previous prime is 201418423. The next prime is 201418517. The reversal of 201418428 is 824814102.

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

It is a junction number, because it is equal to n+sod(n) for n = 201418395 and 201418404.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (201418423) 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, 8392423 + ... + 8392446.

Almost surely, 2^201418428 is an apocalyptic number.

It is an amenable number.

201418428 is an abundant number, since it is smaller than the sum of its proper divisors (268557932).

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

201418428 is a wasteful number, since it uses less digits than its factorization.

201418428 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16784876 (or 16784874 counting only the distinct ones).

The product of its (nonzero) digits is 4096, while the sum is 30.

The square root of 201418428 is about 14192.1960245763. The cubic root of 201418428 is about 586.1827950355.

The spelling of 201418428 in words is "two hundred one million, four hundred eighteen thousand, four hundred twenty-eight".