140808780 has 144 divisors (see below), whose sum is σ = 506338560. Its totient is φ = 32177088.

The previous prime is 140808779. The next prime is 140808793. The reversal of 140808780 is 87808041.

It is a super-2 number, since 2×140808780² = 39654225050176800, which contains 22 as substring.

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

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 31951 + ... + 36089.

It is an arithmetic number, because the mean of its divisors is an integer number (3516240).

Almost surely, 2^140808780 is an apocalyptic number.

140808780 is a gapful number since it is divisible by the number (10) 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 140808780, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (253169280).

140808780 is an abundant number, since it is smaller than the sum of its proper divisors (365529780).

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

140808780 is a wasteful number, since it uses less digits than its factorization.

140808780 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4170 (or 4156 counting only the distinct ones).

The product of its (nonzero) digits is 14336, while the sum is 36.

The square root of 140808780 is about 11866.2875407602. The cubic root of 140808780 is about 520.2473921454.

The spelling of 140808780 in words is "one hundred forty million, eight hundred eight thousand, seven hundred eighty".