72034340 has 24 divisors (see below), whose sum is σ = 172882752. Its totient is φ = 24697440.

The previous prime is 72034327. The next prime is 72034349. The reversal of 72034340 is 4343027.

It is a happy number.

It is a super-2 number, since 2×72034340² = 10377892278471200, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (72034349) 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, 257126 + ... + 257405.

It is an arithmetic number, because the mean of its divisors is an integer number (7203448).

Almost surely, 2^72034340 is an apocalyptic number.

72034340 is a gapful number since it is divisible by the number (70) formed by its first and last digit.

It is an amenable number.

72034340 is an abundant number, since it is smaller than the sum of its proper divisors (100848412).

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

72034340 is a wasteful number, since it uses less digits than its factorization.

72034340 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 514547 (or 514545 counting only the distinct ones).

The product of its (nonzero) digits is 2016, while the sum is 23.

The square root of 72034340 is about 8487.3046369268. The cubic root of 72034340 is about 416.0828930599.

Adding to 72034340 its reverse (4343027), we get a palindrome (76377367).

The spelling of 72034340 in words is "seventy-two million, thirty-four thousand, three hundred forty".