72011532 has 12 divisors (see below), whose sum is σ = 168026936. Its totient is φ = 24003840.

The previous prime is 72011519. The next prime is 72011549. The reversal of 72011532 is 23511027.

It is a tau number, because it is divible by the number of its divisors (12).

It is a junction number, because it is equal to n+sod(n) for n = 72011499 and 72011508.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3000469 + ... + 3000492.

Almost surely, 2^72011532 is an apocalyptic number.

It is an amenable number.

72011532 is an abundant number, since it is smaller than the sum of its proper divisors (96015404).

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

72011532 is a wasteful number, since it uses less digits than its factorization.

72011532 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6000968 (or 6000966 counting only the distinct ones).

The product of its (nonzero) digits is 420, while the sum is 21.

The square root of 72011532 is about 8485.9608766480. The cubic root of 72011532 is about 416.0389740975.

Adding to 72011532 its reverse (23511027), we get a palindrome (95522559).

The spelling of 72011532 in words is "seventy-two million, eleven thousand, five hundred thirty-two".