227620921440 has 288 divisors, whose sum is σ = 794345287680. Its totient is φ = 54744560640.

The previous prime is 227620921433. The next prime is 227620921447. The reversal of 227620921440 is 44129026722.

It is an interprime number because it is at equal distance from previous prime (227620921433) and next prime (227620921447).

It is a super-2 number, since 2×227620921440² (a number of 24 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (227620921447) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 7360731 + ... + 7391589.

It is an arithmetic number, because the mean of its divisors is an integer number (2758143360).

Almost surely, 2^227620921440 is an apocalyptic number.

227620921440 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 227620921440, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (397172643840).

227620921440 is an abundant number, since it is smaller than the sum of its proper divisors (566724366240).

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

227620921440 is a wasteful number, since it uses less digits than its factorization.

227620921440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 31026 (or 31007 counting only the distinct ones).

The product of its (nonzero) digits is 96768, while the sum is 39.

The spelling of 227620921440 in words is "two hundred twenty-seven billion, six hundred twenty million, nine hundred twenty-one thousand, four hundred forty".