40730420 has 24 divisors (see below), whose sum is σ = 85747200. Its totient is φ = 16251552.

The previous prime is 40730411. The next prime is 40730429. The reversal of 40730420 is 2403704.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (40730411) and next prime (40730429).

It is a super-2 number, since 2×40730420² = 3317934226752800, which contains 22 as substring.

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

It is a junction number, because it is equal to n+sod(n) for n = 40730392 and 40730401.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40730429) 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, 6461 + ... + 11099.

It is an arithmetic number, because the mean of its divisors is an integer number (3572800).

Almost surely, 2^40730420 is an apocalyptic number.

It is an amenable number.

40730420 is an abundant number, since it is smaller than the sum of its proper divisors (45016780).

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

40730420 is a wasteful number, since it uses less digits than its factorization.

40730420 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5087 (or 5085 counting only the distinct ones).

The product of its (nonzero) digits is 672, while the sum is 20.

The square root of 40730420 is about 6382.0388591735. The cubic root of 40730420 is about 344.0643132864.

The spelling of 40730420 in words is "forty million, seven hundred thirty thousand, four hundred twenty".