736221990 has 32 divisors (see below), whose sum is σ = 2019352320. Its totient is φ = 168279264.

The previous prime is 736221977. The next prime is 736222033. The reversal of 736221990 is 99122637.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1752700 + ... + 1753119.

It is an arithmetic number, because the mean of its divisors is an integer number (63104760).

Almost surely, 2^736221990 is an apocalyptic number.

736221990 is a gapful number since it is divisible by the number (70) formed by its first and last digit.

736221990 is an abundant number, since it is smaller than the sum of its proper divisors (1283130330).

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

736221990 is a wasteful number, since it uses less digits than its factorization.

736221990 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3505836.

The product of its (nonzero) digits is 40824, while the sum is 39.

The square root of 736221990 is about 27133.4109540249. The cubic root of 736221990 is about 902.9622517207.

The spelling of 736221990 in words is "seven hundred thirty-six million, two hundred twenty-one thousand, nine hundred ninety".