428626554 has 16 divisors (see below), whose sum is σ = 886813920. Its totient is φ = 137948720.

The previous prime is 428626547. The next prime is 428626571. The reversal of 428626554 is 455626824.

It is a happy number.

It is a Smith number, since the sum of its digits (42) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1231512 + ... + 1231859.

It is an arithmetic number, because the mean of its divisors is an integer number (55425870).

Almost surely, 2^428626554 is an apocalyptic number.

428626554 is an abundant number, since it is smaller than the sum of its proper divisors (458187366).

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

428626554 is a wasteful number, since it uses less digits than its factorization.

428626554 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2463405.

The product of its digits is 460800, while the sum is 42.

The square root of 428626554 is about 20703.2981430496. The cubic root of 428626554 is about 753.9797654911.

The spelling of 428626554 in words is "four hundred twenty-eight million, six hundred twenty-six thousand, five hundred fifty-four".