162997380 has 384 divisors, whose sum is σ = 650280960. Its totient is φ = 32970240.

The previous prime is 162997361. The next prime is 162997381. The reversal of 162997380 is 83799261.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is not an unprimeable number, because it can be changed into a prime (162997381) by changing a digit.

It is a polite number, since it can be written in 127 ways as a sum of consecutive naturals, for example, 1523287 + ... + 1523393.

It is an arithmetic number, because the mean of its divisors is an integer number (1693440).

Almost surely, 2^162997380 is an apocalyptic number.

162997380 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 162997380, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (325140480).

162997380 is an abundant number, since it is smaller than the sum of its proper divisors (487283580).

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

162997380 is a wasteful number, since it uses less digits than its factorization.

162997380 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 176 (or 168 counting only the distinct ones).

The product of its (nonzero) digits is 163296, while the sum is 45.

The square root of 162997380 is about 12767.0427272724. The cubic root of 162997380 is about 546.2526303444.

The spelling of 162997380 in words is "one hundred sixty-two million, nine hundred ninety-seven thousand, three hundred eighty".