155196740 has 24 divisors (see below), whose sum is σ = 345085272. Its totient is φ = 58426880.

The previous prime is 155196739. The next prime is 155196763. The reversal of 155196740 is 47691551.

It can be written as a sum of positive squares in 4 ways, for example, as 5721664 + 149475076 = 2392^2 + 12226^2 .

It is a junction number, because it is equal to n+sod(n) for n = 155196694 and 155196703.

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, 227891 + ... + 228570.

It is an arithmetic number, because the mean of its divisors is an integer number (14378553).

Almost surely, 2^155196740 is an apocalyptic number.

155196740 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

155196740 is an abundant number, since it is smaller than the sum of its proper divisors (189888532).

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

155196740 is a wasteful number, since it uses less digits than its factorization.

155196740 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 456487 (or 456485 counting only the distinct ones).

The product of its (nonzero) digits is 37800, while the sum is 38.

The square root of 155196740 is about 12457.7983608662. The cubic root of 155196740 is about 537.3957136778.

The spelling of 155196740 in words is "one hundred fifty-five million, one hundred ninety-six thousand, seven hundred forty".