3950729280 has 672 divisors, whose sum is σ = 15748162560. Its totient is φ = 902430720.

The previous prime is 3950729273. The next prime is 3950729329. The reversal of 3950729280 is 829270593.

3950729280 is digitally balanced in base 2 and base 4, because in such bases it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a congruent number.

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, 28837372 + ... + 28837508.

Almost surely, 2^3950729280 is an apocalyptic number.

3950729280 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 3950729280, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (7874081280).

3950729280 is an abundant number, since it is smaller than the sum of its proper divisors (11797433280).

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

3950729280 is a wasteful number, since it uses less digits than its factorization.

3950729280 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 227 (or 214 counting only the distinct ones).

The product of its (nonzero) digits is 272160, while the sum is 45.

The square root of 3950729280 is about 62854.8270222741. The cubic root of 3950729280 is about 1580.8564069460.

The spelling of 3950729280 in words is "three billion, nine hundred fifty million, seven hundred twenty-nine thousand, two hundred eighty".