72347004 has 18 divisors (see below), whose sum is σ = 182877240. Its totient is φ = 24115656.

The previous prime is 72346987. The next prime is 72347017. The reversal of 72347004 is 40074327.

It is a tau number, because it is divible by the number of its divisors (18).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1004784 + ... + 1004855.

Almost surely, 2^72347004 is an apocalyptic number.

It is an amenable number.

72347004 is an abundant number, since it is smaller than the sum of its proper divisors (110530236).

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

72347004 is a wasteful number, since it uses less digits than its factorization.

72347004 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2009649 (or 2009644 counting only the distinct ones).

The product of its (nonzero) digits is 4704, while the sum is 27.

The square root of 72347004 is about 8505.7042036506. The cubic root of 72347004 is about 416.6840247346.

The spelling of 72347004 in words is "seventy-two million, three hundred forty-seven thousand, four".