73778004 has 36 divisors (see below), whose sum is σ = 186964596. Its totient is φ = 24530688.

The previous prime is 73777993. The next prime is 73778027. The reversal of 73778004 is 40087737.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 10575504 + 63202500 = 3252^2 + 7950^2 .

It is a tau number, because it is divible by the number of its divisors (36).

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a self number, because there is not a number n which added to its sum of digits gives 73778004.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 13222 + ... + 17954.

It is an arithmetic number, because the mean of its divisors is an integer number (5193461).

Almost surely, 2^73778004 is an apocalyptic number.

It is an amenable number.

73778004 is an abundant number, since it is smaller than the sum of its proper divisors (113186592).

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

73778004 is a wasteful number, since it uses less digits than its factorization.

73778004 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5176 (or 5171 counting only the distinct ones).

The product of its (nonzero) digits is 32928, while the sum is 36.

The square root of 73778004 is about 8589.4123198272. The cubic root of 73778004 is about 419.4133987804.

The spelling of 73778004 in words is "seventy-three million, seven hundred seventy-eight thousand, four".