284797620 has 240 divisors, whose sum is σ = 948423168. Its totient is φ = 71435520.

The previous prime is 284797613. The next prime is 284797657. The reversal of 284797620 is 26797482.

It is a super-2 number, since 2×284797620² = 162219368715328800, which contains 22 as substring.

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

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 79 ways as a sum of consecutive naturals, for example, 2661607 + ... + 2661713.

Almost surely, 2^284797620 is an apocalyptic number.

284797620 is a gapful number since it is divisible by the number (20) 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 284797620, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (474211584).

284797620 is an abundant number, since it is smaller than the sum of its proper divisors (663625548).

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

284797620 is a wasteful number, since it uses less digits than its factorization.

284797620 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 212 (or 201 counting only the distinct ones).

The product of its (nonzero) digits is 338688, while the sum is 45.

The square root of 284797620 is about 16875.9479733732. The cubic root of 284797620 is about 657.9286298980.

The spelling of 284797620 in words is "two hundred eighty-four million, seven hundred ninety-seven thousand, six hundred twenty".