73644342 has 16 divisors (see below), whose sum is σ = 155040960. Its totient is φ = 23256072.

The previous prime is 73644283. The next prime is 73644343. The reversal of 73644342 is 24344637.

It is a super-2 number, since 2×73644342² = 10846978217225928, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (73644343) 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, 322888 + ... + 323115.

It is an arithmetic number, because the mean of its divisors is an integer number (9690060).

Almost surely, 2^73644342 is an apocalyptic number.

73644342 is an abundant number, since it is smaller than the sum of its proper divisors (81396618).

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

73644342 is a wasteful number, since it uses less digits than its factorization.

73644342 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 646027.

The product of its digits is 48384, while the sum is 33.

The square root of 73644342 is about 8581.6281671953. The cubic root of 73644342 is about 419.1599649710.

Adding to 73644342 its reverse (24344637), we get a palindrome (97988979).

The spelling of 73644342 in words is "seventy-three million, six hundred forty-four thousand, three hundred forty-two".