1652788620 has 432 divisors, whose sum is σ = 6301084608. Its totient is φ = 348364800.

The previous prime is 1652788607. The next prime is 1652788633. The reversal of 1652788620 is 268872561.

1652788620 is a `hidden beast` number, since 16 + 5 + 2 + 7 + 8 + 8 + 620 = 666.

It is an interprime number because it is at equal distance from previous prime (1652788607) and next prime (1652788633).

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

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 143 ways as a sum of consecutive naturals, for example, 10945545 + ... + 10945695.

It is an arithmetic number, because the mean of its divisors is an integer number (14585844).

Almost surely, 2^1652788620 is an apocalyptic number.

1652788620 is a gapful number since it is divisible by the number (10) 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 1652788620, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3150542304).

1652788620 is an abundant number, since it is smaller than the sum of its proper divisors (4648295988).

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

1652788620 is a wasteful number, since it uses less digits than its factorization.

1652788620 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 270 (or 258 counting only the distinct ones).

The product of its (nonzero) digits is 322560, while the sum is 45.

The square root of 1652788620 is about 40654.5030716156. The cubic root of 1652788620 is about 1182.3310761444.

The spelling of 1652788620 in words is "one billion, six hundred fifty-two million, seven hundred eighty-eight thousand, six hundred twenty".