787942540 has 144 divisors (see below), whose sum is σ = 2210906880. Its totient is φ = 232606080.

The previous prime is 787942523. The next prime is 787942541. The reversal of 787942540 is 45249787.

It is not an unprimeable number, because it can be changed into a prime (787942541) 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, 202897 + ... + 206743.

It is an arithmetic number, because the mean of its divisors is an integer number (15353520).

Almost surely, 2^787942540 is an apocalyptic number.

787942540 is a gapful number since it is divisible by the number (70) 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 787942540, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1105453440).

787942540 is an abundant number, since it is smaller than the sum of its proper divisors (1422964340).

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

787942540 is a wasteful number, since it uses less digits than its factorization.

787942540 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3900 (or 3891 counting only the distinct ones).

The product of its (nonzero) digits is 564480, while the sum is 46.

The square root of 787942540 is about 28070.3142127052. The cubic root of 787942540 is about 923.6303234990.

The spelling of 787942540 in words is "seven hundred eighty-seven million, nine hundred forty-two thousand, five hundred forty".