201830478 has 8 divisors (see below), whose sum is σ = 403660968. Its totient is φ = 67276824.

The previous prime is 201830471. The next prime is 201830479. The reversal of 201830478 is 874038102.

It is a sphenic number, since it is the product of 3 distinct primes.

201830478 is an admirable number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (201830471) 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, 16819201 + ... + 16819212.

It is an arithmetic number, because the mean of its divisors is an integer number (50457621).

Almost surely, 2^201830478 is an apocalyptic number.

201830478 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

201830478 is a wasteful number, since it uses less digits than its factorization.

201830478 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 33638418.

The product of its (nonzero) digits is 10752, while the sum is 33.

The square root of 201830478 is about 14206.7053886536. The cubic root of 201830478 is about 586.5822488870.

The spelling of 201830478 in words is "two hundred one million, eight hundred thirty thousand, four hundred seventy-eight".