220478248440 has 48 divisors (see below), whose sum is σ = 716554308600. Its totient is φ = 58794199488.

The previous prime is 220478248429. The next prime is 220478248451. The reversal of 220478248440 is 44842874022.

It is an interprime number because it is at equal distance from previous prime (220478248429) and next prime (220478248451).

It is a super-2 number, since 2×220478248440² (a number of 23 digits) 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 11 ways as a sum of consecutive naturals, for example, 306219430 + ... + 306220149.

Almost surely, 2^220478248440 is an apocalyptic number.

220478248440 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

220478248440 is an abundant number, since it is smaller than the sum of its proper divisors (496076060160).

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

220478248440 is a wasteful number, since it uses less digits than its factorization.

220478248440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 612439596 (or 612439589 counting only the distinct ones).

The product of its (nonzero) digits is 917504, while the sum is 45.

The spelling of 220478248440 in words is "two hundred twenty billion, four hundred seventy-eight million, two hundred forty-eight thousand, four hundred forty".