2197476540 has 720 divisors, whose sum is σ = 8898785280. Its totient is φ = 450696960.

The previous prime is 2197476517. The next prime is 2197476563. The reversal of 2197476540 is 456747912.

It is an interprime number because it is at equal distance from previous prime (2197476517) and next prime (2197476563).

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 pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 239 ways as a sum of consecutive naturals, for example, 46754797 + ... + 46754843.

It is an arithmetic number, because the mean of its divisors is an integer number (12359424).

Almost surely, 2^2197476540 is an apocalyptic number.

2197476540 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 2197476540, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (4449392640).

2197476540 is an abundant number, since it is smaller than the sum of its proper divisors (6701308740).

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

2197476540 is a wasteful number, since it uses less digits than its factorization.

2197476540 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 132 (or 114 counting only the distinct ones).

The product of its (nonzero) digits is 423360, while the sum is 45.

The square root of 2197476540 is about 46877.2497060141. The cubic root of 2197476540 is about 1300.0939853155.

The spelling of 2197476540 in words is "two billion, one hundred ninety-seven million, four hundred seventy-six thousand, five hundred forty".