997350144 has 72 divisors (see below), whose sum is σ = 3033623040. Its totient is φ = 284955648.

The previous prime is 997350143. The next prime is 997350157. The reversal of 997350144 is 441053799.

It is a Harshad number since it is a multiple of its sum of digits (42).

It is a junction number, because it is equal to n+sod(n) for n = 997350096 and 997350105.

It is not an unprimeable number, because it can be changed into a prime (997350143) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 87384 + ... + 98135.

Almost surely, 2^997350144 is an apocalyptic number.

It is an amenable number.

997350144 is an abundant number, since it is smaller than the sum of its proper divisors (2036272896).

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

997350144 is a wasteful number, since it uses less digits than its factorization.

997350144 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 185545 (or 185531 counting only the distinct ones).

The product of its (nonzero) digits is 136080, while the sum is 42.

The square root of 997350144 is about 31580.8509068391. The cubic root of 997350144 is about 999.1159333231.

The spelling of 997350144 in words is "nine hundred ninety-seven million, three hundred fifty thousand, one hundred forty-four".