201979932 has 96 divisors (see below), whose sum is σ = 595230720. Its totient is φ = 51779520.

The previous prime is 201979871. The next prime is 201979933. The reversal of 201979932 is 239979102.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (42).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (201979933) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 71613 + ... + 74379.

It is an arithmetic number, because the mean of its divisors is an integer number (6200320).

Almost surely, 2^201979932 is an apocalyptic number.

201979932 is a gapful number since it is divisible by the number (22) 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 201979932, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (297615360).

201979932 is an abundant number, since it is smaller than the sum of its proper divisors (393250788).

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

201979932 is a wasteful number, since it uses less digits than its factorization.

201979932 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2871 (or 2869 counting only the distinct ones).

The product of its (nonzero) digits is 61236, while the sum is 42.

The square root of 201979932 is about 14211.9643962402. The cubic root of 201979932 is about 586.7269997926.

The spelling of 201979932 in words is "two hundred one million, nine hundred seventy-nine thousand, nine hundred thirty-two".