78235404 has 96 divisors (see below), whose sum is σ = 204906240. Its totient is φ = 23079168.

The previous prime is 78235393. The next prime is 78235453. The reversal of 78235404 is 40453287.

It is a super-2 number, since 2×78235404² = 12241556878086432, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 717702 + ... + 717810.

It is an arithmetic number, because the mean of its divisors is an integer number (2134440).

Almost surely, 2^78235404 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 78235404, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (102453120).

78235404 is an abundant number, since it is smaller than the sum of its proper divisors (126670836).

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

78235404 is a wasteful number, since it uses less digits than its factorization.

78235404 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 279 (or 277 counting only the distinct ones).

The product of its (nonzero) digits is 26880, while the sum is 33.

The square root of 78235404 is about 8845.0779533026. The cubic root of 78235404 is about 427.6952659483.

The spelling of 78235404 in words is "seventy-eight million, two hundred thirty-five thousand, four hundred four".