426660428 has 24 divisors (see below), whose sum is σ = 792924720. Its totient is φ = 200309760.

The previous prime is 426660427. The next prime is 426660439. The reversal of 426660428 is 824066624.

It is a super-2 number, since 2×426660428² = 364078241642286368, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (38).

It is a junction number, because it is equal to n+sod(n) for n = 426660391 and 426660400.

It is not an unprimeable number, because it can be changed into a prime (426660427) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 16253 + ... + 33428.

It is an arithmetic number, because the mean of its divisors is an integer number (33038530).

Almost surely, 2^426660428 is an apocalyptic number.

It is an amenable number.

426660428 is a deficient number, since it is larger than the sum of its proper divisors (366264292).

426660428 is a wasteful number, since it uses less digits than its factorization.

426660428 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 49817 (or 49815 counting only the distinct ones).

The product of its (nonzero) digits is 110592, while the sum is 38.

The square root of 426660428 is about 20655.7601651452. The cubic root of 426660428 is about 752.8251538306.

The spelling of 426660428 in words is "four hundred twenty-six million, six hundred sixty thousand, four hundred twenty-eight".