73438458 has 16 divisors (see below), whose sum is σ = 154607520. Its totient is φ = 23191056.

The previous prime is 73438381. The next prime is 73438459. The reversal of 73438458 is 85483437.

It is a super-2 number, since 2×73438458² = 10786414226835528, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (73438459) 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, 321985 + ... + 322212.

It is an arithmetic number, because the mean of its divisors is an integer number (9662970).

Almost surely, 2^73438458 is an apocalyptic number.

73438458 is an abundant number, since it is smaller than the sum of its proper divisors (81169062).

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

73438458 is a wasteful number, since it uses less digits than its factorization.

73438458 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 644221.

The product of its digits is 322560, while the sum is 42.

The square root of 73438458 is about 8569.6241457838. The cubic root of 73438458 is about 418.7689918467.

The spelling of 73438458 in words is "seventy-three million, four hundred thirty-eight thousand, four hundred fifty-eight".