1906400 has 36 divisors (see below), whose sum is σ = 4655952. Its totient is φ = 762240.

The previous prime is 1906393. The next prime is 1906417. The reversal of 1906400 is 46091.

It is a Harshad number since it is a multiple of its sum of digits (20).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 392 + ... + 1991.

It is an arithmetic number, because the mean of its divisors is an integer number (129332).

2^1906400 is an apocalyptic number.

1906400 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1906400 is an abundant number, since it is smaller than the sum of its proper divisors (2749552).

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

1906400 is a wasteful number, since it uses less digits than its factorization.

1906400 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2403 (or 2390 counting only the distinct ones).

The product of its (nonzero) digits is 216, while the sum is 20.

The square root of 1906400 is about 1380.7244475275. The cubic root of 1906400 is about 123.9951437571.

The spelling of 1906400 in words is "one million, nine hundred six thousand, four hundred".