73408381 has 8 divisors (see below), whose sum is σ = 77464800. Its totient is φ = 69371280.

The previous prime is 73408369. The next prime is 73408399. The reversal of 73408381 is 18380437.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 73408381 - 2⁹ = 73407869 is a prime.

It is a super-2 number, since 2×73408381² = 10777580802082322, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (73438381) 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, 3351 + ... + 12571.

It is an arithmetic number, because the mean of its divisors is an integer number (9683100).

Almost surely, 2^73408381 is an apocalyptic number.

It is an amenable number.

73408381 is a deficient number, since it is larger than the sum of its proper divisors (4056419).

73408381 is a wasteful number, since it uses less digits than its factorization.

73408381 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9659.

The product of its (nonzero) digits is 16128, while the sum is 34.

The square root of 73408381 is about 8567.8691049759. The cubic root of 73408381 is about 418.7118145621.

The spelling of 73408381 in words is "seventy-three million, four hundred eight thousand, three hundred eighty-one".