72671740 has 24 divisors (see below), whose sum is σ = 155115072. Its totient is φ = 28591680.

The previous prime is 72671707. The next prime is 72671747. The reversal of 72671740 is 4717627.

It is a junction number, because it is equal to n+sod(n) for n = 72671696 and 72671705.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (72671747) 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, 28564 + ... + 31003.

It is an arithmetic number, because the mean of its divisors is an integer number (6463128).

Almost surely, 2^72671740 is an apocalyptic number.

It is an amenable number.

72671740 is an abundant number, since it is smaller than the sum of its proper divisors (82443332).

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

72671740 is a wasteful number, since it uses less digits than its factorization.

72671740 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 59637 (or 59635 counting only the distinct ones).

The product of its (nonzero) digits is 16464, while the sum is 34.

The square root of 72671740 is about 8524.7721377172. The cubic root of 72671740 is about 417.3065354379.

The spelling of 72671740 in words is "seventy-two million, six hundred seventy-one thousand, seven hundred forty".