72969136 has 10 divisors (see below), whose sum is σ = 141377732. Its totient is φ = 36484560.

The previous prime is 72969107. The next prime is 72969137. The reversal of 72969136 is 63196927.

It is a junction number, because it is equal to n+sod(n) for n = 72969092 and 72969101.

It is not an unprimeable number, because it can be changed into a prime (72969137) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2280270 + ... + 2280301.

Almost surely, 2^72969136 is an apocalyptic number.

It is an amenable number.

72969136 is a deficient number, since it is larger than the sum of its proper divisors (68408596).

72969136 is a wasteful number, since it uses less digits than its factorization.

72969136 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4560579 (or 4560573 counting only the distinct ones).

The product of its digits is 122472, while the sum is 43.

The square root of 72969136 is about 8542.1973753830. The cubic root of 72969136 is about 417.8750112782.

The spelling of 72969136 in words is "seventy-two million, nine hundred sixty-nine thousand, one hundred thirty-six".