749212254 has 84 divisors (see below), whose sum is σ = 1960238664. Its totient is φ = 214040232.

The previous prime is 749212249. The next prime is 749212271. The reversal of 749212254 is 452212947.

It is a super-2 number, since 2×749212254² = 1122638003087521032, which contains 22 as substring.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 41 ways as a sum of consecutive naturals, for example, 66199 + ... + 76685.

Almost surely, 2^749212254 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 749212254, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (980119332).

749212254 is an abundant number, since it is smaller than the sum of its proper divisors (1211026410).

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

749212254 is a wasteful number, since it uses less digits than its factorization.

749212254 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10521 (or 10499 counting only the distinct ones).

The product of its digits is 40320, while the sum is 36.

The square root of 749212254 is about 27371.7418883052. The cubic root of 749212254 is about 908.2420895432.

The spelling of 749212254 in words is "seven hundred forty-nine million, two hundred twelve thousand, two hundred fifty-four".