78041040 has 320 divisors, whose sum is σ = 311980032. Its totient is φ = 15667200.

The previous prime is 78041039. The next prime is 78041071. The reversal of 78041040 is 4014087.

It is a Harshad number since it is a multiple of its sum of digits (24).

It is a self number, because there is not a number n which added to its sum of digits gives 78041040.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 757629 + ... + 757731.

Almost surely, 2^78041040 is an apocalyptic number.

78041040 is a gapful number since it is divisible by the number (70) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 78041040, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (155990016).

78041040 is an abundant number, since it is smaller than the sum of its proper divisors (233938992).

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

78041040 is a wasteful number, since it uses less digits than its factorization.

78041040 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 178 (or 172 counting only the distinct ones).

The product of its (nonzero) digits is 896, while the sum is 24.

The square root of 78041040 is about 8834.0839932616. The cubic root of 78041040 is about 427.3407908910.

The spelling of 78041040 in words is "seventy-eight million, forty-one thousand, forty".