5431890 has 16 divisors (see below), whose sum is σ = 13036608. Its totient is φ = 1448496.

The previous prime is 5431873. The next prime is 5431939. The reversal of 5431890 is 981345.

It is a Harshad number since it is a multiple of its sum of digits (30), and also a Moran number because the ratio is a prime number: 181063 = 5431890 / (5 + 4 + 3 + 1 + 8 + 9 + 0).

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 90502 + ... + 90561.

It is an arithmetic number, because the mean of its divisors is an integer number (814788).

Almost surely, 2^5431890 is an apocalyptic number.

5431890 is an abundant number, since it is smaller than the sum of its proper divisors (7604718).

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

5431890 is a wasteful number, since it uses less digits than its factorization.

5431890 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 181073.

The product of its (nonzero) digits is 4320, while the sum is 30.

The square root of 5431890 is about 2330.6415425801. The cubic root of 5431890 is about 175.7857456529.

The spelling of 5431890 in words is "five million, four hundred thirty-one thousand, eight hundred ninety".