869526720 has 252 divisors, whose sum is σ = 3106125360. Its totient is φ = 223254528.

The previous prime is 869526703. The next prime is 869526731. The reversal of 869526720 is 27625968.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is an unprimeable number.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 2421901 + ... + 2422259.

Almost surely, 2^869526720 is an apocalyptic number.

869526720 is a gapful number since it is divisible by the number (80) 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 869526720, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1553062680).

869526720 is an abundant number, since it is smaller than the sum of its proper divisors (2236598640).

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

869526720 is a wasteful number, since it uses less digits than its factorization.

869526720 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 440 (or 398 counting only the distinct ones).

The product of its (nonzero) digits is 362880, while the sum is 45.

The square root of 869526720 is about 29487.7384687263. The cubic root of 869526720 is about 954.4671314338.

The spelling of 869526720 in words is "eight hundred sixty-nine million, five hundred twenty-six thousand, seven hundred twenty".