913985280 has 432 divisors, whose sum is σ = 3615917760. Its totient is φ = 211156992.

The previous prime is 913985279. The next prime is 913985287. The reversal of 913985280 is 82589319.

It is a happy number.

913985280 is a `hidden beast` number, since 91 + 39 + 8 + 528 + 0 = 666.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (913985287) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 2545741 + ... + 2546099.

It is an arithmetic number, because the mean of its divisors is an integer number (8370180).

Almost surely, 2^913985280 is an apocalyptic number.

913985280 is a gapful number since it is divisible by the number (90) 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 913985280, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1807958880).

913985280 is an abundant number, since it is smaller than the sum of its proper divisors (2701932480).

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

913985280 is a wasteful number, since it uses less digits than its factorization.

913985280 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 416 (or 399 counting only the distinct ones).

The product of its (nonzero) digits is 155520, while the sum is 45.

The square root of 913985280 is about 30232.1894675195. The cubic root of 913985280 is about 970.4646797574.

The spelling of 913985280 in words is "nine hundred thirteen million, nine hundred eighty-five thousand, two hundred eighty".