73561430 has 16 divisors (see below), whose sum is σ = 133650000. Its totient is φ = 29149152.

The previous prime is 73561427. The next prime is 73561447. The reversal of 73561430 is 3416537.

It is a super-2 number, since 2×73561430² = 10822567967289800, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 73561393 and 73561402.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 33305 + ... + 35444.

It is an arithmetic number, because the mean of its divisors is an integer number (8353125).

Almost surely, 2^73561430 is an apocalyptic number.

73561430 is a deficient number, since it is larger than the sum of its proper divisors (60088570).

73561430 is a wasteful number, since it uses less digits than its factorization.

73561430 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 68863.

The product of its (nonzero) digits is 7560, while the sum is 29.

The square root of 73561430 is about 8576.7960218254. The cubic root of 73561430 is about 419.0026030677.

Adding to 73561430 its reverse (3416537), we get a palindrome (76977967).

The spelling of 73561430 in words is "seventy-three million, five hundred sixty-one thousand, four hundred thirty".