140931780 has 48 divisors (see below), whose sum is σ = 430484544. Its totient is φ = 34165120.

The previous prime is 140931761. The next prime is 140931781. The reversal of 140931780 is 87139041.

It is a super-2 number, since 2×140931780² = 39723533227936800, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (33).

It is not an unprimeable number, because it can be changed into a prime (140931781) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 106107 + ... + 107426.

It is an arithmetic number, because the mean of its divisors is an integer number (8968428).

Almost surely, 2^140931780 is an apocalyptic number.

140931780 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

140931780 is an abundant number, since it is smaller than the sum of its proper divisors (289552764).

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

140931780 is a wasteful number, since it uses less digits than its factorization.

140931780 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 213556 (or 213554 counting only the distinct ones).

The product of its (nonzero) digits is 6048, while the sum is 33.

The square root of 140931780 is about 11871.4691592911. The cubic root of 140931780 is about 520.3988311060.

The spelling of 140931780 in words is "one hundred forty million, nine hundred thirty-one thousand, seven hundred eighty".