197072154 has 24 divisors (see below), whose sum is σ = 434229120. Its totient is φ = 64576968.

The previous prime is 197072149. The next prime is 197072167. The reversal of 197072154 is 451270791.

It is a happy number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 91722 + ... + 93845.

It is an arithmetic number, because the mean of its divisors is an integer number (18092880).

Almost surely, 2^197072154 is an apocalyptic number.

197072154 is an abundant number, since it is smaller than the sum of its proper divisors (237156966).

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

197072154 is a wasteful number, since it uses less digits than its factorization.

197072154 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 185634 (or 185631 counting only the distinct ones).

The product of its (nonzero) digits is 17640, while the sum is 36.

The square root of 197072154 is about 14038.2389921243. The cubic root of 197072154 is about 581.9358167787.

The spelling of 197072154 in words is "one hundred ninety-seven million, seventy-two thousand, one hundred fifty-four".