878745402 has 128 divisors (see below), whose sum is σ = 2206310400. Its totient is φ = 257603328.

The previous prime is 878745379. The next prime is 878745403. The reversal of 878745402 is 204547878.

It is a super-2 number, since 2×878745402² = 1544386963072283208, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (878745403) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 1447383 + ... + 1447989.

It is an arithmetic number, because the mean of its divisors is an integer number (17236800).

Almost surely, 2^878745402 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 878745402, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1103155200).

878745402 is an abundant number, since it is smaller than the sum of its proper divisors (1327564998).

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

878745402 is a wasteful number, since it uses less digits than its factorization.

878745402 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 737 (or 731 counting only the distinct ones).

The product of its (nonzero) digits is 501760, while the sum is 45.

The square root of 878745402 is about 29643.6401610868. The cubic root of 878745402 is about 957.8283528696.

The spelling of 878745402 in words is "eight hundred seventy-eight million, seven hundred forty-five thousand, four hundred two".