191282740 has 24 divisors (see below), whose sum is σ = 438211872. Its totient is φ = 69557280.

The previous prime is 191282737. The next prime is 191282807. The reversal of 191282740 is 47282191.

It is a junction number, because it is equal to n+sod(n) for n = 191282696 and 191282705.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 434514 + ... + 434953.

It is an arithmetic number, because the mean of its divisors is an integer number (18258828).

Almost surely, 2^191282740 is an apocalyptic number.

191282740 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

191282740 is an abundant number, since it is smaller than the sum of its proper divisors (246929132).

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

191282740 is a wasteful number, since it uses less digits than its factorization.

191282740 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 869487 (or 869485 counting only the distinct ones).

The product of its (nonzero) digits is 8064, while the sum is 34.

The square root of 191282740 is about 13830.5003524818. The cubic root of 191282740 is about 576.1805511987.

The spelling of 191282740 in words is "one hundred ninety-one million, two hundred eighty-two thousand, seven hundred forty".