72273400 has 48 divisors (see below), whose sum is σ = 173471040. Its totient is φ = 27974400.

The previous prime is 72273379. The next prime is 72273401. The reversal of 72273400 is 437227.

It is a Harshad number since it is a multiple of its sum of digits (25).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (72273401) 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, 372 + ... + 12028.

It is an arithmetic number, because the mean of its divisors is an integer number (3613980).

Almost surely, 2^72273400 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 72273400, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (86735520).

72273400 is an abundant number, since it is smaller than the sum of its proper divisors (101197640).

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

72273400 is a wasteful number, since it uses less digits than its factorization.

72273400 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11704 (or 11695 counting only the distinct ones).

The product of its (nonzero) digits is 2352, while the sum is 25.

The square root of 72273400 is about 8501.3763591550. The cubic root of 72273400 is about 416.5426688804.

The spelling of 72273400 in words is "seventy-two million, two hundred seventy-three thousand, four hundred".