2031428 has 12 divisors (see below), whose sum is σ = 4062912. Its totient is φ = 870600.

The previous prime is 2031409. The next prime is 2031431. The reversal of 2031428 is 8241302.

2031428 is an admirable number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 36248 + ... + 36303.

It is an arithmetic number, because the mean of its divisors is an integer number (338576).

2^2031428 is an apocalyptic number.

2031428 is a gapful number since it is divisible by the number (28) formed by its first and last digit.

It is an amenable number.

2031428 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

2031428 is a wasteful number, since it uses less digits than its factorization.

2031428 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 72562 (or 72560 counting only the distinct ones).

The product of its (nonzero) digits is 384, while the sum is 20.

The square root of 2031428 is about 1425.2817265369. The cubic root of 2031428 is about 126.6486247002.

The spelling of 2031428 in words is "two million, thirty-one thousand, four hundred twenty-eight".