4640487280 has 320 divisors, whose sum is σ = 13607129088. Its totient is φ = 1445806080.

The previous prime is 4640487251. The next prime is 4640487311. The reversal of 4640487280 is 827840464.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 20809249 + ... + 20809471.

Almost surely, 2^4640487280 is an apocalyptic number.

4640487280 is a gapful number since it is divisible by the number (40) 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 4640487280, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (6803564544).

4640487280 is an abundant number, since it is smaller than the sum of its proper divisors (8966641808).

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

4640487280 is a wasteful number, since it uses less digits than its factorization.

4640487280 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 384 (or 378 counting only the distinct ones).

The product of its (nonzero) digits is 344064, while the sum is 43.

The square root of 4640487280 is about 68121.1221281623. The cubic root of 4640487280 is about 1667.9685674789.

The spelling of 4640487280 in words is "four billion, six hundred forty million, four hundred eighty-seven thousand, two hundred eighty".