73051428 has 24 divisors (see below), whose sum is σ = 179425120. Its totient is φ = 23068800.

The previous prime is 73051423. The next prime is 73051439. The reversal of 73051428 is 82415037.

It is a super-2 number, since 2×73051428² = 10673022265678368, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 73051395 and 73051404.

It is not an unprimeable number, because it can be changed into a prime (73051423) 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, 159973 + ... + 160428.

Almost surely, 2^73051428 is an apocalyptic number.

It is an amenable number.

73051428 is an abundant number, since it is smaller than the sum of its proper divisors (106373692).

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

73051428 is a wasteful number, since it uses less digits than its factorization.

73051428 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 320427 (or 320425 counting only the distinct ones).

The product of its (nonzero) digits is 6720, while the sum is 30.

The square root of 73051428 is about 8547.0128115032. The cubic root of 73051428 is about 418.0320404612.

The spelling of 73051428 in words is "seventy-three million, fifty-one thousand, four hundred twenty-eight".