201626442 has 48 divisors (see below), whose sum is σ = 472927680. Its totient is φ = 63665352.

The previous prime is 201626419. The next prime is 201626459. The reversal of 201626442 is 244626102.

201626442 is a `hidden beast` number, since 2 + 0 + 16 + 2 + 644 + 2 = 666.

It is a super-2 number, since 2×201626442² = 81306444227158728, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (27).

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, 14323 + ... + 24665.

It is an arithmetic number, because the mean of its divisors is an integer number (9852660).

Almost surely, 2^201626442 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 201626442, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (236463840).

201626442 is an abundant number, since it is smaller than the sum of its proper divisors (271301238).

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

201626442 is a wasteful number, since it uses less digits than its factorization.

201626442 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10392 (or 10367 counting only the distinct ones).

The product of its (nonzero) digits is 4608, while the sum is 27.

The square root of 201626442 is about 14199.5225976087. The cubic root of 201626442 is about 586.3845181806.

The spelling of 201626442 in words is "two hundred one million, six hundred twenty-six thousand, four hundred forty-two".