455220240 has 80 divisors (see below), whose sum is σ = 1485470400. Its totient is φ = 115001856.

The previous prime is 455220191. The next prime is 455220289. The reversal of 455220240 is 42022554.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (455220191) and next prime (455220289).

It is a tau number, because it is divible by the number of its divisors (80).

It is a Harshad number since it is a multiple of its sum of digits (24).

It is a self number, because there is not a number n which added to its sum of digits gives 455220240.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 45355 + ... + 54474.

It is an arithmetic number, because the mean of its divisors is an integer number (18568380).

Almost surely, 2^455220240 is an apocalyptic number.

455220240 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

455220240 is an abundant number, since it is smaller than the sum of its proper divisors (1030250160).

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

455220240 is a wasteful number, since it uses less digits than its factorization.

455220240 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 99864 (or 99858 counting only the distinct ones).

The product of its (nonzero) digits is 3200, while the sum is 24.

The square root of 455220240 is about 21335.8908883599. The cubic root of 455220240 is about 769.2612468129.

Adding to 455220240 its reverse (42022554), we get a palindrome (497242794).

The spelling of 455220240 in words is "four hundred fifty-five million, two hundred twenty thousand, two hundred forty".