72430623 has 24 divisors (see below), whose sum is σ = 106229760. Its totient is φ = 47552400.

The previous prime is 72430621. The next prime is 72430643. The reversal of 72430623 is 32603427.

72430623 is a `hidden beast` number, since 7 + 2 + 4 + 30 + 623 = 666.

It is not a de Polignac number, because 72430623 - 2¹ = 72430621 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (72430621) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 302938 + ... + 303176.

It is an arithmetic number, because the mean of its divisors is an integer number (4426240).

Almost surely, 2^72430623 is an apocalyptic number.

72430623 is a deficient number, since it is larger than the sum of its proper divisors (33799137).

72430623 is a wasteful number, since it uses less digits than its factorization.

72430623 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 619 (or 616 counting only the distinct ones).

The product of its (nonzero) digits is 6048, while the sum is 27.

The square root of 72430623 is about 8510.6182501626. The cubic root of 72430623 is about 416.8444980294.

The spelling of 72430623 in words is "seventy-two million, four hundred thirty thousand, six hundred twenty-three".