247252530 has 192 divisors, whose sum is σ = 737538048. Its totient is φ = 52778880.

The previous prime is 247252517. The next prime is 247252547. The reversal of 247252530 is 35252742.

It is a super-2 number, since 2×247252530² = 122267627182801800, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is an unprimeable number.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 2400459 + ... + 2400561.

It is an arithmetic number, because the mean of its divisors is an integer number (3841344).

Almost surely, 2^247252530 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 247252530, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (368769024).

247252530 is an abundant number, since it is smaller than the sum of its proper divisors (490285518).

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

247252530 is a wasteful number, since it uses less digits than its factorization.

247252530 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 221 (or 214 counting only the distinct ones).

The product of its (nonzero) digits is 16800, while the sum is 30.

The square root of 247252530 is about 15724.2656426302. The cubic root of 247252530 is about 627.6442888671.

The spelling of 247252530 in words is "two hundred forty-seven million, two hundred fifty-two thousand, five hundred thirty".