201426840 has 96 divisors (see below), whose sum is σ = 675792000. Its totient is φ = 51978240.

The previous prime is 201426817. The next prime is 201426851. The reversal of 201426840 is 48624102.

It is a zygodrome in base 2.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 2136 + ... + 20184.

It is an arithmetic number, because the mean of its divisors is an integer number (7039500).

Almost surely, 2^201426840 is an apocalyptic number.

201426840 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 201426840, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (337896000).

201426840 is an abundant number, since it is smaller than the sum of its proper divisors (474365160).

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

201426840 is a wasteful number, since it uses less digits than its factorization.

201426840 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18097 (or 18090 counting only the distinct ones).

The product of its (nonzero) digits is 3072, while the sum is 27.

The square root of 201426840 is about 14192.4923815375. The cubic root of 201426840 is about 586.1909553299.

The spelling of 201426840 in words is "two hundred one million, four hundred twenty-six thousand, eight hundred forty".