72235988 has 24 divisors (see below), whose sum is σ = 141635424. Its totient is φ = 31946400.

The previous prime is 72235981. The next prime is 72236011. The reversal of 72235988 is 88953227.

It is a super-2 number, since 2×72235988² = 10436075924672288, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (44).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (72235981) 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, 20558 + ... + 23813.

It is an arithmetic number, because the mean of its divisors is an integer number (5901476).

Almost surely, 2^72235988 is an apocalyptic number.

It is an amenable number.

72235988 is a deficient number, since it is larger than the sum of its proper divisors (69399436).

72235988 is a wasteful number, since it uses less digits than its factorization.

72235988 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 44423 (or 44421 counting only the distinct ones).

The product of its digits is 241920, while the sum is 44.

The square root of 72235988 is about 8499.1757247394. The cubic root of 72235988 is about 416.4707826629.

The spelling of 72235988 in words is "seventy-two million, two hundred thirty-five thousand, nine hundred eighty-eight".