247012890 has 32 divisors (see below), whose sum is σ = 627704640. Its totient is φ = 61995264.

The previous prime is 247012889. The next prime is 247012891. The reversal of 247012890 is 98210742.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (247012889) and next prime (247012891).

It is a super-2 number, since 2×247012890² = 122030735652304200, which contains 22 as substring.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (247012891) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 241660 + ... + 242679.

It is an arithmetic number, because the mean of its divisors is an integer number (19615770).

Almost surely, 2^247012890 is an apocalyptic number.

247012890 is an abundant number, since it is smaller than the sum of its proper divisors (380691750).

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

247012890 is a wasteful number, since it uses less digits than its factorization.

247012890 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 484366.

The product of its (nonzero) digits is 8064, while the sum is 33.

The square root of 247012890 is about 15716.6437256814. The cubic root of 247012890 is about 627.4414499637.

The spelling of 247012890 in words is "two hundred forty-seven million, twelve thousand, eight hundred ninety".