722632878 has 48 divisors (see below), whose sum is σ = 1763154432. Its totient is φ = 211914000.

The previous prime is 722632873. The next prime is 722632951. The reversal of 722632878 is 878236227.

722632878 is a `hidden beast` number, since 7 + 2 + 2 + 632 + 8 + 7 + 8 = 666.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (722632873) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 52728 + ... + 65003.

It is an arithmetic number, because the mean of its divisors is an integer number (36732384).

Almost surely, 2^722632878 is an apocalyptic number.

722632878 is an abundant number, since it is smaller than the sum of its proper divisors (1040521554).

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

722632878 is a wasteful number, since it uses less digits than its factorization.

722632878 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 117781 (or 117778 counting only the distinct ones).

The product of its digits is 451584, while the sum is 45.

The square root of 722632878 is about 26881.8317456233. The cubic root of 722632878 is about 897.3721195917.

It can be divided in two parts, 7226 and 32878, that added together give a palindrome (40104).

The spelling of 722632878 in words is "seven hundred twenty-two million, six hundred thirty-two thousand, eight hundred seventy-eight".