72343073 has 16 divisors (see below), whose sum is σ = 83500416. Its totient is φ = 62029440.

The previous prime is 72343069. The next prime is 72343087. The reversal of 72343073 is 37034327.

It is not a de Polignac number, because 72343073 - 2² = 72343069 is a prime.

It is a super-2 number, since 2×72343073² = 10467040422166658, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (72343003) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 16511 + ... + 20427.

It is an arithmetic number, because the mean of its divisors is an integer number (5218776).

Almost surely, 2^72343073 is an apocalyptic number.

72343073 is a gapful number since it is divisible by the number (73) formed by its first and last digit.

It is an amenable number.

72343073 is a deficient number, since it is larger than the sum of its proper divisors (11157343).

72343073 is a wasteful number, since it uses less digits than its factorization.

72343073 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4024.

The product of its (nonzero) digits is 10584, while the sum is 29.

The square root of 72343073 is about 8505.4731202914. The cubic root of 72343073 is about 416.6764777068.

The spelling of 72343073 in words is "seventy-two million, three hundred forty-three thousand, seventy-three".