140349780 has 48 divisors (see below), whose sum is σ = 436645440. Its totient is φ = 37426464.

The previous prime is 140349779. The next prime is 140349851. The reversal of 140349780 is 87943041.

It is a happy number.

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 15 ways as a sum of consecutive naturals, for example, 129414 + ... + 130493.

It is an arithmetic number, because the mean of its divisors is an integer number (9096780).

Almost surely, 2^140349780 is an apocalyptic number.

140349780 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

140349780 is an abundant number, since it is smaller than the sum of its proper divisors (296295660).

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

140349780 is a wasteful number, since it uses less digits than its factorization.

140349780 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 259925 (or 259917 counting only the distinct ones).

The product of its (nonzero) digits is 24192, while the sum is 36.

The square root of 140349780 is about 11846.9312482178. The cubic root of 140349780 is about 519.6814864015.

The spelling of 140349780 in words is "one hundred forty million, three hundred forty-nine thousand, seven hundred eighty".