1900426 has 12 divisors (see below), whose sum is σ = 3133746. Its totient is φ = 863720.

The previous prime is 1900397. The next prime is 1900429. The reversal of 1900426 is 6240091.

It can be written as a sum of positive squares in only one way, i.e., 1890625 + 9801 = 1375^2 + 99^2 .

It is a super-2 number, since 2×1900426² = 7223237962952, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (22).

It is a junction number, because it is equal to n+sod(n) for n = 1900397 and 1900406.

It is not an unprimeable number, because it can be changed into a prime (1900429) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 3685 + ... + 4168.

2^1900426 is an apocalyptic number.

1900426 is a deficient number, since it is larger than the sum of its proper divisors (1233320).

1900426 is a wasteful number, since it uses less digits than its factorization.

1900426 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7877 (or 7866 counting only the distinct ones).

The product of its (nonzero) digits is 432, while the sum is 22.

The square root of 1900426 is about 1378.5593929897. The cubic root of 1900426 is about 123.8654888950.

The spelling of 1900426 in words is "one million, nine hundred thousand, four hundred twenty-six".