72401746 has 16 divisors (see below), whose sum is σ = 113554944. Its totient is φ = 34556544.

The previous prime is 72401743. The next prime is 72401773. The reversal of 72401746 is 64710427.

It is not an unprimeable number, because it can be changed into a prime (72401743) 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, 26626 + ... + 29218.

It is an arithmetic number, because the mean of its divisors is an integer number (7097184).

Almost surely, 2^72401746 is an apocalyptic number.

72401746 is a deficient number, since it is larger than the sum of its proper divisors (41153198).

72401746 is a wasteful number, since it uses less digits than its factorization.

72401746 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3225.

The product of its (nonzero) digits is 9408, while the sum is 31.

The square root of 72401746 is about 8508.9215532875. The cubic root of 72401746 is about 416.7890941219.

The spelling of 72401746 in words is "seventy-two million, four hundred one thousand, seven hundred forty-six".