78541884 has 18 divisors (see below), whose sum is σ = 198536520. Its totient is φ = 26180616.

The previous prime is 78541871. The next prime is 78541901. The reversal of 78541884 is 48814587.

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 polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1090824 + ... + 1090895.

Almost surely, 2^78541884 is an apocalyptic number.

It is an amenable number.

78541884 is an abundant number, since it is smaller than the sum of its proper divisors (119994636).

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

78541884 is a wasteful number, since it uses less digits than its factorization.

78541884 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2181729 (or 2181724 counting only the distinct ones).

The product of its digits is 286720, while the sum is 45.

The square root of 78541884 is about 8862.3859089976. The cubic root of 78541884 is about 428.2530238826.

The spelling of 78541884 in words is "seventy-eight million, five hundred forty-one thousand, eight hundred eighty-four".