247222990 has 16 divisors (see below), whose sum is σ = 508573152. Its totient is φ = 84762144.

The previous prime is 247222979. The next prime is 247223023. The reversal of 247222990 is 99222742.

It is a super-2 number, since 2×247222990² = 122238413569080200, which contains 22 as substring.

It is a congruent number.

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, 1765809 + ... + 1765948.

It is an arithmetic number, because the mean of its divisors is an integer number (31785822).

Almost surely, 2^247222990 is an apocalyptic number.

247222990 is an abundant number, since it is smaller than the sum of its proper divisors (261350162).

247222990 is a wasteful number, since it uses less digits than its factorization.

247222990 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3531771.

The product of its (nonzero) digits is 36288, while the sum is 37.

The square root of 247222990 is about 15723.3263020266. The cubic root of 247222990 is about 627.6192923575.

The spelling of 247222990 in words is "two hundred forty-seven million, two hundred twenty-two thousand, nine hundred ninety".