3620897280 has 960 divisors, whose sum is σ = 16944415488. Its totient is φ = 690094080.

The previous prime is 3620897257. The next prime is 3620897299. The reversal of 3620897280 is 827980263.

3620897280 is a `hidden beast` number, since 362 + 0 + 8 + 9 + 7 + 280 = 666.

It is a tau number, because it is divible by the number of its divisors (960).

It is a super-2 number, since 2×3620897280² = 26221794224622796800, 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 95 ways as a sum of consecutive naturals, for example, 23062962 + ... + 23063118.

Almost surely, 2^3620897280 is an apocalyptic number.

3620897280 is a gapful number since it is divisible by the number (30) 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 3620897280, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (8472207744).

3620897280 is an abundant number, since it is smaller than the sum of its proper divisors (13323518208).

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

3620897280 is a wasteful number, since it uses less digits than its factorization.

3620897280 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 217 (or 198 counting only the distinct ones).

The product of its (nonzero) digits is 290304, while the sum is 45.

The square root of 3620897280 is about 60173.8920130649. The cubic root of 3620897280 is about 1535.5786604748.

The spelling of 3620897280 in words is "three billion, six hundred twenty million, eight hundred ninety-seven thousand, two hundred eighty".