672199290 has 128 divisors (see below), whose sum is σ = 2156544000. Its totient is φ = 145551168.

The previous prime is 672199277. The next prime is 672199343. The reversal of 672199290 is 92991276.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 26551 + ... + 45269.

It is an arithmetic number, because the mean of its divisors is an integer number (16848000).

Almost surely, 2^672199290 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 672199290, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1078272000).

672199290 is an abundant number, since it is smaller than the sum of its proper divisors (1484344710).

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

672199290 is a wasteful number, since it uses less digits than its factorization.

672199290 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18761 (or 18755 counting only the distinct ones).

The product of its (nonzero) digits is 122472, while the sum is 45.

The square root of 672199290 is about 25926.8063980121. The cubic root of 672199290 is about 875.9904061625.

The spelling of 672199290 in words is "six hundred seventy-two million, one hundred ninety-nine thousand, two hundred ninety".