43402890 has 32 divisors (see below), whose sum is σ = 104582016. Its totient is φ = 11528000.

The previous prime is 43402873. The next prime is 43402907. The reversal of 43402890 is 9820434.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (43402873) and next prime (43402907).

It is a Harshad number since it is a multiple of its sum of digits (30).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 5140 + ... + 10640.

It is an arithmetic number, because the mean of its divisors is an integer number (3268188).

Almost surely, 2^43402890 is an apocalyptic number.

43402890 is an abundant number, since it is smaller than the sum of its proper divisors (61179126).

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

43402890 is a wasteful number, since it uses less digits than its factorization.

43402890 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5774.

The product of its (nonzero) digits is 6912, while the sum is 30.

The square root of 43402890 is about 6588.0869757464. The cubic root of 43402890 is about 351.4305800948.

The spelling of 43402890 in words is "forty-three million, four hundred two thousand, eight hundred ninety".