70778430 has 48 divisors (see below), whose sum is σ = 188313840. Its totient is φ = 18434304.

The previous prime is 70778419. The next prime is 70778453. The reversal of 70778430 is 3487707.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 5275 + ... + 13014.

It is an arithmetic number, because the mean of its divisors is an integer number (3923205).

Almost surely, 2^70778430 is an apocalyptic number.

70778430 is an abundant number, since it is smaller than the sum of its proper divisors (117535410).

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

70778430 is a wasteful number, since it uses less digits than its factorization.

70778430 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18345 (or 18342 counting only the distinct ones).

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

The square root of 70778430 is about 8412.9917389713. The cubic root of 70778430 is about 413.6505838425.

The spelling of 70778430 in words is "seventy million, seven hundred seventy-eight thousand, four hundred thirty".