72194101 has 12 divisors (see below), whose sum is σ = 84460320. Its totient is φ = 61527480.

The previous prime is 72194063. The next prime is 72194107. The reversal of 72194101 is 10149127.

It is not a de Polignac number, because 72194101 - 2⁷ = 72193973 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (72194107) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 4656 + ... + 12886.

It is an arithmetic number, because the mean of its divisors is an integer number (7038360).

Almost surely, 2^72194101 is an apocalyptic number.

It is an amenable number.

72194101 is a deficient number, since it is larger than the sum of its proper divisors (12266219).

72194101 is a wasteful number, since it uses less digits than its factorization.

72194101 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8424 (or 8417 counting only the distinct ones).

The product of its (nonzero) digits is 504, while the sum is 25.

The square root of 72194101 is about 8496.7111872771. The cubic root of 72194101 is about 416.3902683879.

The spelling of 72194101 in words is "seventy-two million, one hundred ninety-four thousand, one hundred one".