787744980 has 384 divisors, whose sum is σ = 2939328000. Its totient is φ = 172892160.

The previous prime is 787744967. The next prime is 787744981. The reversal of 787744980 is 89447787.

787744980 is a `hidden beast` number, since 7 + 87 + 74 + 498 + 0 = 666.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (787744981) by changing a digit.

It is a polite number, since it can be written in 127 ways as a sum of consecutive naturals, for example, 2928286 + ... + 2928554.

It is an arithmetic number, because the mean of its divisors is an integer number (7654500).

Almost surely, 2^787744980 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 787744980, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1469664000).

787744980 is an abundant number, since it is smaller than the sum of its proper divisors (2151583020).

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

787744980 is a wasteful number, since it uses less digits than its factorization.

787744980 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 344 (or 336 counting only the distinct ones).

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

The square root of 787744980 is about 28066.7949719949. The cubic root of 787744980 is about 923.5531234284.

The spelling of 787744980 in words is "seven hundred eighty-seven million, seven hundred forty-four thousand, nine hundred eighty".