35420240 has 20 divisors (see below), whose sum is σ = 82352244. Its totient is φ = 14168064.

The previous prime is 35420239. The next prime is 35420251. The reversal of 35420240 is 4202453.

It can be written as a sum of positive squares in 2 ways, for example, as 3655744 + 31764496 = 1912^2 + 5636^2 .

It is a tau number, because it is divible by the number of its divisors (20).

It is a super-3 number, since 3×35420240³ (a number of 24 digits) contains 333 as substring.

It is a Harshad number since it is a multiple of its sum of digits (20).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 221297 + ... + 221456.

Almost surely, 2^35420240 is an apocalyptic number.

It is an amenable number.

35420240 is an abundant number, since it is smaller than the sum of its proper divisors (46932004).

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

35420240 is a wasteful number, since it uses less digits than its factorization.

35420240 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 442766 (or 442760 counting only the distinct ones).

The product of its (nonzero) digits is 960, while the sum is 20.

The square root of 35420240 is about 5951.4905695968. The cubic root of 35420240 is about 328.4106001999.

Adding to 35420240 its reverse (4202453), we get a palindrome (39622693).

The spelling of 35420240 in words is "thirty-five million, four hundred twenty thousand, two hundred forty".