121464728 has 96 divisors (see below), whose sum is σ = 306199440. Its totient is φ = 44513280.

The previous prime is 121464719. The next prime is 121464767. The reversal of 121464728 is 827464121.

It is a super-2 number, since 2×121464728² = 29507360296227968, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 72476 + ... + 74132.

Almost surely, 2^121464728 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 121464728, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (153099720).

121464728 is an abundant number, since it is smaller than the sum of its proper divisors (184734712).

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

121464728 is a wasteful number, since it uses less digits than its factorization.

121464728 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1705 (or 1694 counting only the distinct ones).

The product of its digits is 21504, while the sum is 35.

The square root of 121464728 is about 11021.1037559765. The cubic root of 121464728 is about 495.2411544742.

The spelling of 121464728 in words is "one hundred twenty-one million, four hundred sixty-four thousand, seven hundred twenty-eight".