201987378 has 32 divisors (see below), whose sum is σ = 464342400. Its totient is φ = 65006928.

The previous prime is 201987367. The next prime is 201987391. The reversal of 201987378 is 873789102.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 62926 + ... + 66057.

It is an arithmetic number, because the mean of its divisors is an integer number (14510700).

Almost surely, 2^201987378 is an apocalyptic number.

201987378 is an abundant number, since it is smaller than the sum of its proper divisors (262355022).

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

201987378 is a wasteful number, since it uses less digits than its factorization.

201987378 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 129023 (or 129017 counting only the distinct ones).

The product of its (nonzero) digits is 169344, while the sum is 45.

The square root of 201987378 is about 14212.2263562047. The cubic root of 201987378 is about 586.7342096104.

The spelling of 201987378 in words is "two hundred one million, nine hundred eighty-seven thousand, three hundred seventy-eight".