97420281 has 24 divisors (see below), whose sum is σ = 151492320. Its totient is φ = 55524672.

The previous prime is 97420273. The next prime is 97420283. The reversal of 97420281 is 18202479.

It is a happy number.

It is not a de Polignac number, because 97420281 - 2³ = 97420273 is a prime.

It is a super-2 number, since 2×97420281² = 18981422300237922, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (97420283) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 85725 + ... + 86853.

It is an arithmetic number, because the mean of its divisors is an integer number (6312180).

Almost surely, 2^97420281 is an apocalyptic number.

It is an amenable number.

97420281 is a deficient number, since it is larger than the sum of its proper divisors (54072039).

97420281 is a wasteful number, since it uses less digits than its factorization.

97420281 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1733 (or 1726 counting only the distinct ones).

The product of its (nonzero) digits is 8064, while the sum is 33.

The square root of 97420281 is about 9870.1712751097. The cubic root of 97420281 is about 460.1327294991.

The spelling of 97420281 in words is "ninety-seven million, four hundred twenty thousand, two hundred eighty-one".