201078740 has 24 divisors (see below), whose sum is σ = 423263232. Its totient is φ = 80241440.

The previous prime is 201078727. The next prime is 201078743. The reversal of 201078740 is 47870102.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (201078743) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3044 + ... + 20283.

It is an arithmetic number, because the mean of its divisors is an integer number (17635968).

Almost surely, 2^201078740 is an apocalyptic number.

201078740 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

201078740 is an abundant number, since it is smaller than the sum of its proper divisors (222184492).

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

201078740 is a wasteful number, since it uses less digits than its factorization.

201078740 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23767 (or 23765 counting only the distinct ones).

The product of its (nonzero) digits is 3136, while the sum is 29.

The square root of 201078740 is about 14180.2235525396. The cubic root of 201078740 is about 585.8530812401.

The spelling of 201078740 in words is "two hundred one million, seventy-eight thousand, seven hundred forty".