220078454 has 4 divisors (see below), whose sum is σ = 330117684. Its totient is φ = 110039226.

The previous prime is 220078409. The next prime is 220078471. The reversal of 220078454 is 454870022.

220078454 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 454870022 = 2 ⋅227435011.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 220078454.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 55019612 + ... + 55019615.

It is an arithmetic number, because the mean of its divisors is an integer number (82529421).

Almost surely, 2^220078454 is an apocalyptic number.

220078454 is a deficient number, since it is larger than the sum of its proper divisors (110039230).

220078454 is a wasteful number, since it uses less digits than its factorization.

220078454 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 110039229.

The product of its (nonzero) digits is 17920, while the sum is 32.

The square root of 220078454 is about 14835.0414222543. The cubic root of 220078454 is about 603.7528245377.

The spelling of 220078454 in words is "two hundred twenty million, seventy-eight thousand, four hundred fifty-four".