71746290 has 384 divisors, whose sum is σ = 265939200. Its totient is φ = 13547520.

The previous prime is 71746271. The next prime is 71746303. The reversal of 71746290 is 9264717.

71746290 = 61² + 62² + ... + 599².

It is a happy number.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 191 ways as a sum of consecutive naturals, for example, 2473996 + ... + 2474024.

It is an arithmetic number, because the mean of its divisors is an integer number (692550).

Almost surely, 2^71746290 is an apocalyptic number.

71746290 is a gapful number since it is divisible by the number (70) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 71746290, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (132969600).

71746290 is an abundant number, since it is smaller than the sum of its proper divisors (194192910).

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

71746290 is a wasteful number, since it uses less digits than its factorization.

71746290 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 87 (or 74 counting only the distinct ones).

The product of its (nonzero) digits is 21168, while the sum is 36.

The square root of 71746290 is about 8470.3181758420. The cubic root of 71746290 is about 415.5275431702.

The spelling of 71746290 in words is "seventy-one million, seven hundred forty-six thousand, two hundred ninety".