78175044 has 168 divisors, whose sum is σ = 231366240. Its totient is φ = 22954752.

The previous prime is 78175021. The next prime is 78175051. The reversal of 78175044 is 44057187.

It is a super-2 number, since 2×78175044² = 12222675008803872, which contains 22 as substring.

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

It is an unprimeable number.

It is a polite number, since it can be written in 55 ways as a sum of consecutive naturals, for example, 941827 + ... + 941909.

It is an arithmetic number, because the mean of its divisors is an integer number (1377180).

Almost surely, 2^78175044 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 78175044, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (115683120).

78175044 is an abundant number, since it is smaller than the sum of its proper divisors (153191196).

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

78175044 is a wasteful number, since it uses less digits than its factorization.

78175044 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 141 (or 124 counting only the distinct ones).

The product of its (nonzero) digits is 31360, while the sum is 36.

The square root of 78175044 is about 8841.6652277724. The cubic root of 78175044 is about 427.5852461582.

The spelling of 78175044 in words is "seventy-eight million, one hundred seventy-five thousand, forty-four".