97280380 has 48 divisors (see below), whose sum is σ = 218736000. Its totient is φ = 36230976.

The previous prime is 97280377. The next prime is 97280383. The reversal of 97280380 is 8308279.

It is an interprime number because it is at equal distance from previous prime (97280377) and next prime (97280383).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (97280383) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 20251 + ... + 24589.

It is an arithmetic number, because the mean of its divisors is an integer number (4557000).

Almost surely, 2^97280380 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 97280380, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (109368000).

97280380 is an abundant number, since it is smaller than the sum of its proper divisors (121455620).

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

97280380 is a wasteful number, since it uses less digits than its factorization.

97280380 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4426 (or 4424 counting only the distinct ones).

The product of its (nonzero) digits is 24192, while the sum is 37.

The square root of 97280380 is about 9863.0816685253. The cubic root of 97280380 is about 459.9123651583.

It can be divided in two parts, 97280 and 380, that multiplied together give a square (36966400 = 6080²).

The spelling of 97280380 in words is "ninety-seven million, two hundred eighty thousand, three hundred eighty".