73404436 has 24 divisors (see below), whose sum is σ = 155445696. Its totient is φ = 29608320.

The previous prime is 73404433. The next prime is 73404439. The reversal of 73404436 is 63440437.

It is an interprime number because it is at equal distance from previous prime (73404433) and next prime (73404439).

It is a super-2 number, since 2×73404436² = 10776422448956192, which contains 22 as substring.

It is a hoax number, since the sum of its digits (31) coincides with the sum of the digits of its distinct prime factors.

It is a junction number, because it is equal to n+sod(n) for n = 73404398 and 73404407.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (73404433) 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, 76630 + ... + 77581.

It is an arithmetic number, because the mean of its divisors is an integer number (6476904).

Almost surely, 2^73404436 is an apocalyptic number.

It is an amenable number.

73404436 is an abundant number, since it is smaller than the sum of its proper divisors (82041260).

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

73404436 is a wasteful number, since it uses less digits than its factorization.

73404436 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 154239 (or 154237 counting only the distinct ones).

The product of its (nonzero) digits is 24192, while the sum is 31.

The square root of 73404436 is about 8567.6388812788. The cubic root of 73404436 is about 418.7043138396.

The spelling of 73404436 in words is "seventy-three million, four hundred four thousand, four hundred thirty-six".