787294728 has 144 divisors (see below), whose sum is σ = 2431250640. Its totient is φ = 238502880.

The previous prime is 787294723. The next prime is 787294741. The reversal of 787294728 is 827492787.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is not an unprimeable number, because it can be changed into a prime (787294721) by changing a digit.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 233551 + ... + 236897.

It is an arithmetic number, because the mean of its divisors is an integer number (16883685).

Almost surely, 2^787294728 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 787294728, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1215625320).

787294728 is an abundant number, since it is smaller than the sum of its proper divisors (1643955912).

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

787294728 is a wasteful number, since it uses less digits than its factorization.

787294728 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3390 (or 3363 counting only the distinct ones).

The product of its digits is 3161088, while the sum is 54.

The square root of 787294728 is about 28058.7727457920. The cubic root of 787294728 is about 923.3771312387.

The spelling of 787294728 in words is "seven hundred eighty-seven million, two hundred ninety-four thousand, seven hundred twenty-eight".