247890774 has 16 divisors (see below), whose sum is σ = 496143360. Its totient is φ = 82569960.

The previous prime is 247890767. The next prime is 247890779. The reversal of 247890774 is 477098742.

247890774 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×247890774² = 122899671668638152, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (247890779) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5722 + ... + 22989.

It is an arithmetic number, because the mean of its divisors is an integer number (31008960).

Almost surely, 2^247890774 is an apocalyptic number.

247890774 is an abundant number, since it is smaller than the sum of its proper divisors (248252586).

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

247890774 is a wasteful number, since it uses less digits than its factorization.

247890774 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 30155.

The product of its (nonzero) digits is 790272, while the sum is 48.

The square root of 247890774 is about 15744.5474371288. The cubic root of 247890774 is about 628.1838802555.

The spelling of 247890774 in words is "two hundred forty-seven million, eight hundred ninety thousand, seven hundred seventy-four".