72430066 has 16 divisors (see below), whose sum is σ = 109892160. Its totient is φ = 35802000.

The previous prime is 72430063. The next prime is 72430073. The reversal of 72430066 is 66003427.

It is a super-2 number, since 2×72430066² = 10492228921528712, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (72430063) 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, 78355 + ... + 79273.

It is an arithmetic number, because the mean of its divisors is an integer number (6868260).

Almost surely, 2^72430066 is an apocalyptic number.

72430066 is a deficient number, since it is larger than the sum of its proper divisors (37462094).

72430066 is a wasteful number, since it uses less digits than its factorization.

72430066 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1329.

The product of its (nonzero) digits is 6048, while the sum is 28.

The square root of 72430066 is about 8510.5855262726. The cubic root of 72430066 is about 416.8434294989.

The spelling of 72430066 in words is "seventy-two million, four hundred thirty thousand, sixty-six".