140725728 has 384 divisors, whose sum is σ = 518192640. Its totient is φ = 36495360.

The previous prime is 140725703. The next prime is 140725729. The reversal of 140725728 is 827527041.

140725728 is a `hidden beast` number, since 14 + 0 + 72 + 572 + 8 = 666.

It is a super-2 number, since 2×140725728² = 39607461042259968, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a junction number, because it is equal to n+sod(n) for n = 140725692 and 140725701.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (140725729) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 2100351 + ... + 2100417.

It is an arithmetic number, because the mean of its divisors is an integer number (1349460).

Almost surely, 2^140725728 is an apocalyptic number.

140725728 is a gapful number since it is divisible by the number (18) 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 140725728, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (259096320).

140725728 is an abundant number, since it is smaller than the sum of its proper divisors (377466912).

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

140725728 is a wasteful number, since it uses less digits than its factorization.

140725728 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 127 (or 113 counting only the distinct ones).

The product of its (nonzero) digits is 31360, while the sum is 36.

The square root of 140725728 is about 11862.7875307619. The cubic root of 140725728 is about 520.1450877197.

The spelling of 140725728 in words is "one hundred forty million, seven hundred twenty-five thousand, seven hundred twenty-eight".